Data Processing Practice Tests – Relational Models and Constraints in Database


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The computer language for storing, manipulating and retrieving data stored in a relational database is known as _______

A. machine language      B. programming language      C. Structured Query Language      D. C++


The data in RDBMS is store in database objects called _______

A. fields      B. records      C. tables      D. none of the above


Rules that ensures the accuracy and reliability of the data in the database are known as ______

A. SQL      B. Entities      C. Attributes      D. Constraints


The property of data which, when satisfied, requires every value of one attribute of a relation to exist as a value of another attribute in a different (or the same) relation is known as _______.

A. Entity integrity     B. Domain integrity     C. Referential integrity     D. none of the above


The ______ constraint ensures that a column cannot have NULL value.

A. NOT NULL      B. DEFAULT      C. UNIQUE      D. none of the above


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