DBSM 121-180

Choose the correct relational algebra operation

• Union

• Difference

• Intersection

• Product

Choose the correct relational algebra operation

• Union

•    Difference

• Intersection

• Product

Choose the correct relational algebra operation

• Union

• Difference

• Intersection

• Product

Choose the correct relational algebra

operation

• Union

• Difference

• Intersection

• Product

The SQL WHERE clause

• Condition that limits the column data that are returned

• Condition that limits the row data are returned

• Clause that returns all rows

• Clause that returns nothing

The command to eliminate a table from a database

• Drop

• Delete

• Remove

• Update

Which of the following is correct order of keywords for SQL Select statement?

• SELECT, FROM, WHERE

• WHERE, FROM, SELECT

• FROM, WHERE, SELECT

• SELECT, WHERE, FROM

Are given table union compatible ?

• Yes

• No

• I do not know

• May be

SQL data definition commands make up a(n)

• DDC

• DML

• DDL

• DDD

In a relation, the columns are also called attributes

• True

• False

• May be

• I do not know