Explanation

User-defined functions are those that are created by the programmer to perform specific tasks.

Unlike pre-defined functions, they offer custom behavior and improve code reusability and structure.

Explanation

A compiler is a language translator that converts high-level code into machine code.

It translates the entire program before execution, allowing the program to run independently.

Explanation

The SELECT * syntax retrieves all columns from the specified table.

It is the standard SQL command for displaying complete table data.

Explanation

Explanation

Explanation

Explorer and Firefox are web browsers used to access the internet.

Such programs are categorized as application software, designed for specific user tasks.

Explanation

An index helps the database quickly locate rows in a table without scanning the entire data.

It improves query performance by providing direct pointers to the data rows.

Explanation

printf() is the standard function in C to print output to the screen.

The syntax must include double quotes around the string and end with a semicolon.

Explanation

Concurrency control manages simultaneous access to data in a database to prevent conflicts or data inconsistency.

It ensures data integrity when multiple users perform read/write operations at the same time.

Explanation

IBM stands for International business machines.

IBM 1401 belong to second generation. 

Second generation of computer: 1956 to 1963

Used in Second Generation: Transistors