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Computing

Computing · Quick practice · answer shown after each question

Databases

Question 1 of 10

Question 1 of 10

A field in one table that refers to the primary key of another table is a

Question 2 of 10

Question 2 of 10

A query in a database is used to

Question 3 of 10

Question 3 of 10

Which SQL command retrieves data from a table?

Question 4 of 10

Question 4 of 10

The SQL command used to retrieve data is

Question 5 of 10

Question 5 of 10

Normalisation in databases aims to

Question 6 of 10

Question 6 of 10

The SQL command to change existing data is

Question 7 of 10

Question 7 of 10

The SQL query SELECT COUNT(*) FROM students WHERE age > 16 returns

Question 8 of 10

Question 8 of 10

In a database table, a single row is a

Question 9 of 10

Question 9 of 10

Referential integrity ensures that

Question 10 of 10

Question 10 of 10

Which SQL clause filters rows?

Questions written by OtisamLMS in the style of the WASSCE. They are not WAEC past questions.