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M&IB Devx - Database

M&IB Devx - Database

This is part of the DevX course assessment that will be taken by delegates before and after the programme.

Questions: 30 | Attempts: 142 | Last updated: Jul 9, 2024

Sample Question 1
The first normal form (1NF) ensures that?

All attributes of a table are dependent on the entire primary key

All attributes are atomic, i.e. there are no repeating groups of data

All integrity constraints are met

All foreign keys are identified

Sample Question 2
Which of the following describes a primary key?

A primary key uniquely identifies a row in a table

A primary key is the only key in that table

A primary key must always be a single column

Primary keys are not required in most databases

Sample Question 3
Which of the following statements best describes "isolated", the "I" in ACID?

Transactions complete in one complete unit of work, or not at all.

Databases limit the number of concurrent users.

A transaction's effect is not visible to another transaction.

Databases must use ANSI-compliant SQL