________ involves standardizing the format of data retrieved from different systems.

A ____ is a column in a table that describes a characteristic about a record.

A ________ is the smallest component in the computer system data hierarchy.

A star schema contains both fact and ________ tables.

An entity cluster is formed by combining multiple interrelated entities into ____.

Data that are never physically altered once they are added to the store are called ________ data.

Which of the following options is defined as the tendency to change the internal schema without affecting the conceptual schema?

A covert channel permits the transfer of information in such a way that it violates the system's security policy.

Which of the following statements is false?

The index in which the search key defines an order that is dissimilar from the sequential order of the file is known as index.

Consider a relation 'Book' with the following structure: book_id (Primary key) book_name book_title date_of_issue Which of the following relational algebra operations will return all the entries of book_id and book_title from the relation 'Book'?