Data Processing Practice Tests – Relational Models and Constraints in Database

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Data Processing Practice Tests – Relational Models and Constraints in Database


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In a relational database, attributes are also referred to as ______

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


A column in a database table that is designed to maintain specific information about every record in the database table is known as _______

A. field       B. record      C. tables      D. SQL


The following SQL commands are examples of the components of Data Definition Language EXCEPT ______

A. UPDATE      B. CREATE      C. ALTER      D. DROP


The _______ constraint ensures that all values in a column satisfy certain conditions.

A. NOT NULL      B. DEFAULT      C. UNIQUE      D. CHECK


The ______ constraint is use to create and retrieve data from the database very quickly.

A. INDEX      B. DEFAULT      C. UNIQUE      D. CHECK


 



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