Database Management System MCQ

1. In the internet, the movement from one network to another network is termed a _______.

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2. Recovering a database via rollforward involves ________.

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3. The way patient records are created, filed, and maintained is called a(n) ____.

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4. Decision makers can access analytical databases using an executive __________.

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5. Dbmss available for use on personal computers include ____ and corel paradox.

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6. Data warehouses are sometimes called hypercubes because they _____.

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7. Data integrity with real-time systems involves the acid test, which involves ________.

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8. Current data distribution philosophy makes it easy for ____ end users to access the database.

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9. A(n) _____ is a logical storage area in oracle.

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10. In a database, bits can be organized into bytes, and each byte represents is a(n) ______.

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11. Ideally, an entity identifier is composed of _____ attribute(s).

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12. A(n) ____ limits access to systems, such as computer databases.

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13. You use the ____ clause to list data in a specific order.

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14. ____ is an example of assistive output devices.

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15. To eliminate duplicate rows in a query, the ________ qualifier is used in the sql select command.

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16. Oracle 11g is an example of a(n) ____.

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17. A table that contains a repeating group is called a(n) ____.

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18. A verb associating two nouns in a business rule translates to a(n) ____ in the data model.

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19. To add new data to a table, use the ____ command.

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20. A total completeness constraint is represented by _____.

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21. The extended entity relationship model (eerm) is sometimes referred to as the ____.

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22. A(n) ____________________ is a specific request issued to the dbms for data manipulation.

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23. A specialization hierarchy can have _____ level(s) of supertype/subtype relationships.

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24. In a dataflow diagram (dfd), a(n) ___________ portrays the transformation of data.

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25. ________ integrates data from various operational systems.

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26. A ____ query creates a new table using the query results.

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27. A(n) ____ has a central security database that is used by all computers that are members of it.

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28. The default orientation for printing a report many be changed using the ____ feature of access.

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29. Knowing the ____ number of entity occurrences is very helpful at the application software level.

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30. A _____ is a central storehouse of information about a system's data.

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31. A _____ attribute can be further subdivided to yield additional attributes.

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32. _____ occurs when applications cannot access data associated with other applications.

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33. The maintenance and evolution phase of the database life cycle (dblc) involves _____.

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34. _____ relationships occur when there are multiple relationship paths between related entities.

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35. A(n) ____ is responsible for setting up and managing large databases within an organization.

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36. A ________ check would be used to restrict the fines for speeding violations from $50 to $250.

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37. A(n) _____ is a computer application that contains records or files.

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38. ____ can describe any type of data.

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39. The initial assessment and the feasibility study are part of the sdlc's ____ phase.

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40. A _____ relationship exists when an association is maintained within a single entity.

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41. A(n) _____ is bidirectional.

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42. The oracle equivalent to an ms access autonumber is a(n) _____.

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43. "union-compatible" means that the ____.

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44. The one table in a one-to-many relationship is the ____________________ table.

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45. The characteristics of an entity are called ____.

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46. The acronym ____________ refers to software that manages data stored in a database.

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47. The _____ relationship should be rare in any relational database design.

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48. Microsoft's most powerful dbms is ________.

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49. ______ are abstractions of reality that explain how things work.

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50. The ____ command will create an application program's or individual user's picture of the database.

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51. Primary keys ensure that ____.

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52. Data warehouse contains historical data obtained from the _____.

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53. One way to locate records on a form is to use the find button on the ____ tab in the find group.

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54. To change the caption for a form, use the ____ property in the property sheet.

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55. The database structure in a dbms is stored as a _____.

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56. A ________ is a member function that is automatically called when a class object is ________.

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57. Sql requires the use of the _____ command to enter data into a table.

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58. Sql is an example of a ________ category programming language.

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59. Microsoft azure sql is an example of a _________________ database.

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60. In a star schema, dimensions are normally stored in ____.

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61. ________ represent the movement of data from one activity to another.

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62. The ____ data type is used to store integers

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63. The ____ data type can store up to a gigabyte of text.

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64. One of the challenges with unsupervised data mining is ________.

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65. Most data you encounter is best classified as ____.

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66. A characteristic of operational data is ____.

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67. A characteristic of decision support data is ____.

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68. A(n) ____ is a data element containing the address of another data element.

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69. Changing cardinalities ________.

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70. A table that displays data redundancies yields _____.

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71. A database is an organized collection of ________ related data.

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72. Maximum cardinality refers to ________.

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73. ________ duplicates data across databases.

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74. To include all fields in a sql query, use the ____ symbol after the word select.

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75. To delete a row from the product table, use the ____ command.

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76. To create a new table by using a select statement, you code the ___________________________ clause.

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77. To change a table name, we ________.

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78. There are two views for tables in access: datasheet view and ________ view.

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79. The syntax for a left outer join is ____.

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80. The sql command ________ defines a logical table from one or more tables or views.

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81. The sql aggregate function that gives the arithmetic mean for a specific column is _____.

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82. The sql ________ statement allows you to combine two different tables.

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83. The pl/sql block starts with the _____ section.

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84. The pl/sql block starts with the ____ clause.

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85. The comparison operator, < >, is used to insert a condition that means ____.

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86. The _____ statement combines rows from two queries and excludes duplicates.

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87. The _____ operator could be used in place of intersect if the dbms does not support it.

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88. The _____ data type is compatible with number.

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89. The _____ command replaces the ***** in the syntax of the update command, shown above.

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90. The ____ function calculates the number of entries in a table.

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91. The ____ function calculates a total of the values in a column.

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92. Sql queries that use exists and not exists are ________.

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93. Sql is an example of a ________ style of programming language.

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94. Oracle 11g is an example of the _____.

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95. In oracle, use the ____ command to display the structure of a table.

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96. In oracle, the _____ function converts a date to a character string.

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97. Columns in a database table contain data with the same _________:

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98. A group of similar rows or records is known as ________.

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99. "lastname" is an example of ________.

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100. A _____ index is based on 0 and 1 bits to represent a given condition.

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101. When designing a database, you should _____.

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102. A(n) ____ join will select only the rows with common values in the common attribute(s).

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103. A(n) _____ is the set of possible values for a given attribute.

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104. In the ________ step the data is either written to the file or read from the file.

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105. A stored program that is attached to a table or view is called ________.

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106. In a data model, a(n) ________ is something that a user wants to track.

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107. Data in a multidimensional database is organized in a ________ format

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108. To assign a conditional value, use the ____ function.

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109. When using a hdfs, the _____ node creates new files by communicating with the ____ node.

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110. When a primary key combines two or more fields, it is called a ____ key.

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111. To retrieve data from multiple tables in a query you can use the ____ operator with a subquery.

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112. To make a specific database active, you must execute the ____ database statement.

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113. To close the resultset, use ____.

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114. The types of constraints supported in sql are ____.

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115. The syntax for the union query is ____.

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116. The statement, ____, removes the table smaller from a dbms.

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117. The primary disadvantage of centralized database systems is ________.

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118. The basic form of an sql retrieval command is ____.

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119. The _______________ constraint assigns a value to an attribute when a new row is added to a table.

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120. The ____ operator uses one or more wildcard characters to test for a pattern match.

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121. The ____ operator could be used in place of intersect if the rdbms does not support it.

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122. Sql uses search operators such as ____ to form complex queries.

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123. Referential integrity prevents the creation of ____ records.

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124. Popular ____ include access, oracle, db2, mysql, and sql server.

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125. Oracle and sql server support the ____ operator but microsoft access does not.

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126. One of the important functions of a dbms is to provide the necessary tools for ________.

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127. Normalization is normally done to ___ normal form.

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128. In sql, you use the check clause to enforce ____ integrity.

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129. In dbms, data are kept separate from the application's programming code. this means that ________.

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130. In an sql query, a ____ clause is used to specify the table you want to access.

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131. Data type helps a database management system (dbms) to ________.

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132. From the performance point of view, _____ databases eliminate disk access bottlenecks.

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133. To insert a new field in a table, the ____ keyword should be used with the alter table command.

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134. The most basic file ____ are characteristics such as filename, creation date, and modified date.

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135. The last part of an sql query to be read is the ________ statement.

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136. Dirty data is ________.

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137. You would use query by example, if _____.

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138. The step, ____, occurs first in the process of building an erd.

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139. The response of the dbms to a query is the ____.

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140. The ________________ keeps track of all of the processes that update the database.

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141. The ____ command within relational algebra takes a vertical subset of a table.

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142. A supply chain driven by actual customer orders or purchases follows a ________ model.

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143. In order to summarize qualitative data, a useful tool is a __________.

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144. Most family therapists who work with couples concentrate on ______.

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145. School-age children would most admire _____.

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146. A star schema contains both fact and ________ tables.

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147. A spelling mistake in a message is an example of ________

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148. The total quiz points for a student for an entire semester is a(n) ________ attribute.

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149. The ____ is responsible for providing training in the use of the dbms.

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150. The definition for ____ also defines a candidate key.

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151. The dbms provides applications for processing operations such as ________.

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152. The dbms _____ the sql query and chooses the most efficient access/execution plan.

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153. The dbms _____ the data and sends the result set back to the client.

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154. The data ____ component is used to create and maintain the data dictionary.

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155. The data ____ component is used to add, delete, modify, and retrieve records from a database.

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156. The ____ type of attribute cannot be created in a dbms.

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157. You can restrict the output from a join to include only certain columns by using the ____ command.

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158. The _____ special operator is used to check whether an attribute value is null.

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159. The _____ process analyzes sql queries and finds the most efficient way to access data.

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160. Special data that describe the data contained in a database are called ________.

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161. Some databases use ______, which is a visual approach to developing queries and requests.

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162. Some attributes are classified as ____.

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163. Relational tables need to be ______________ to help avoid duplicate data.

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164. Relational databases represent relationships using ________.

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165. Referential integrity is normally enforced by the ____.

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166. Reducing redundant data helps improve the _____ of the database.

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167. Rather than deleting old data, it can be moved to a data __________.

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168. Potential problems in the design of a relational database are known as ____.

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169. Opening a(n) ________ file creates a file on disk and allows the program to write data to it.

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170. One of the important properties of a column is whether or not it is ________.

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171. One column of a table in a relational database is called a(n) ____.

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172. Odbc works on the _____ operating system.

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173. Most designers consider the bcnf as a special case of the ____.

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174. Most decision-support data are based on historical data obtained from ____.

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175. Microsoft access can best be described as ____ software.

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176. Metadata are ________.

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177. Many programs today use ______ on a webpage as their front end.

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178. Lock ____ indicates the level of lock use.

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179. Insert into is an example of ________ code.

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180. Individual database tables are often referred to as ____.

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181. In this text, boyce-codd normal form is the same as ____.

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182. In the world of databases, a(n) ____ refers to a collection of data fields.

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183. In the sql language, the ________ statement is used to make table definitions.

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184. In the accompanying figure, any field that serves as a primary key is called a _____.

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185. In indexed storage, when a file is created, the pointers in the index block are all set to ____.

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186. In database systems, a _____ refers to a list of data.

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187. In comparison with a flat file system, _____ in a database.

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188. In a student database, a good key field for a record would be a ______

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189. In a student database, a column called lastname would be an example of a(n) _____________.

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190. In a general sense, ____________ refers to all the non-hardware components of a digital device.

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191. In a file-oriented information system, a work file ____.

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192. In a file oriented information system a security file ____

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193. In a database, when data items disagree with one another, it leads to a(n) ________.

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194. In a database, the term ________ is synonymous with a category of information.

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195. In a database, a table is formally referred to as a ________.

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196. In a database, a collection of related records is referred to as a table or a ____.

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197. In a client/server system, users access the database through ____.

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198. If a primary key combines two or more fields, then it is called a _____.

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199. Granularity refers to ____.

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200. From a structural point of view, 3nf is better than _____.

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201. File ______ refers to the procedures that keep data current.

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202. Fields that contain numbers that are not used in calculations should be set to ________.

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203. Field values related to records that contain those field values may be listed in a(n) ____.

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204. Each table _____ represents an attribute.

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205. Each category of information in a database is called a(n) ____.

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206. Each attribute of an entity becomes a(n) ________ of a table.

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207. Design view is used to ____ a table.

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208. Constraints on the minimum number of entities in a relationship are called ________ cardinalities.

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209. Complete categories are represented by ____ line(s) below the category symbol.

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210. Compared with character-based formats, a _____ offers a more efficient storage method.

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211. Columns that are keys to different tables than the ones in which they reside are called ________.

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212. Browser-based applications ________.

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213. A ____ is a group of interrelated files.

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214. Big data analytics is usually associated with ________ services.

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215. As part of a dbms, a(n) _________ documents information about a database.

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216. Another term for a database row is a(n) ________.

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217. Another name for a composite entity is a(n) _____ entity.

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218. An entity that exists to implement a many-to-many relationship is called a(n) ____.

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219. An electronic storage file where firms keep customer information is known as a(n) ________.

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220. An attribute is also referred to as a ________.

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221. After a dbms detects a deadlock, the ____ should break the deadlock.

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222. A(n) ______ is an item that contains data, as well as the actions that read or process the data.

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223. A(n) ____ synonym is used by others to access an individual's database objects.

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224. A distributed _____ can reference several different local or remote data processing sites.

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225. A database administrator (dba) is responsible for _____.

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226. A data ____ table describes the fields you plan to maintain in a table.

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227. A consistent database is ____.

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228. A collection of related records in a database is referred to as a _____.

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229. A ________ is a highly structured collection of data values organized into separate tables.

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230. A ________ is a group of related data that can be stored, sorted, organized, and queried.

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231. A ________ is a collection of related data that can be stored, sorted, organized, and queried.

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232. A ______ is the highest level of data hierarchy.

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233. A ____ is a program that lets computer users create and access a collection of organized data.

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234. A ____ database supports data distributed across several different sites.

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235. __________ are the most commonly used database clients.