Restriction of_ from the basic relational model has been removed in the nested relational model.

Consider the schema R = (ABCD) and the functional dependencies A -> B, B -> C, C -> D and D -> A. Let R = (R1 and R2) be a decomposition, such that R1 {'1 R2 = cp. The decomposition is in .

Which of the following statements about normal forms is/are true?

____ yields better performance.

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

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

Which attributes is represented by the entity-relationship (E-R) diagram given in the image?

A database table must have only one primary key and one super key.

Which one of the given options is not a component of a storage manager in a database management system?

Which of the following levels of a data storage virtualization technology involves block-level striping with distributed parity?

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