A module library contains a set of pre written and pre tested procedures that can be used by the main program to complete its tasks. This has the advantage of speeding up the development of the software.

Some companies also provide access to module libraries they maintain to allow you to work with their products. i.e. Google

The case statement is used to make complex selection easier. It is used with one variable i.e

1. Case Age
2. >=21: Display over 21
3. >=18: Display over 18
4. <18: Display Under 18

A lot of people get these two terms mixed up.

• A script is a piece of code that is written or edited and can be attached to a button or ran directly.
• A Macro on the other hand is a sequence of steps that is recorded from the users actions.

They are very easy to mix up so read any questions carefully.

A declarative language makes use of facts and rules to solve the problem. Prolog is an example of a declarative language.

More info.

An array is a data structure that can store a number of pieces of data of the same type. While a normal variable can only store one piece of data at a time an array can store more than one.

Array need to be setup before they are used in VB, you also need to specify the size of the array in advance. i.e. DIM LastName(10) as String would create a ten item array of type String.

The function of the translator is to change the source (program) code into object (machine) code.  There are two main types

• Interpreter – This checks each line as it as typed for syntax errors. When the program is executed it is translated line by line and the resultant object code is stored in RAM while executed. The Interpreter needs to be present in memory while the program executes.
• Compiler – This only checks for syntax error when the program is executed. The compiler changes the whole program to object code that is then stored on backing store where it can be executed without the compiler being loaded into RAM.