Practice questions · Public Library

Try answering the question yourself before revealing the answer.

Exam-style questions from the same notes. Reveal the library answer when ready.

Calculated Controls

Computer Science · Class 12

Short text, long text, number, date/time, currency, auto-number, yes/no, and attachment types suit different data.

Update, append, delete, and make-table queries modify data and require preview, validation, and backup.

A new row must satisfy required fields, data types, key uniqueness, validation, and relationship rules.

An expression derives a value from existing fields and should use correct names, types, parentheses, and null handling.

Widths, hidden columns, frozen fields, and display formats improve viewing without changing underlying values.

A selection control can show meaningful text while storing a related key, reducing typing errors.