Tag: programming languages

True

False

A foreign key is a key field (column) in a database table, which relates the table to another table where the key is a primary key. The primary - foreign key relations are used to cross-reference database tables.

The foreign key is a SQL locking mechanism.

The foreign key is a column that can have NULL values.

None of the above

Access. Consistency. Isolation. Data.

Access. Constraint. Index. Data.

Atomicity. Consistency. Isolation. Durability.

None of the above

Locking is the process of database authentication.

Locking is a process preventing users from reading data being changed by other users, and prevents concurrent users from changing the same data at the same time.

Locking is a process, which logs database usage.

None of the above

True

False

Microsoft

HP

Intel

Borland

True

False

True

False

Cumulative Sum

Moving Sum

RANK

None of the above

Derived Table

Volatile Table

Global Temp Table

All of the above