Visual Basic Terms

Topics: Data type, Programming language, Subroutine, Object, Variable / Pages: 7 (1691 words) / Published: Apr 15th, 2013
EVENT: MEANS THE USER HAS INITIATED AN ACTION THAT CAUSES THE PROGRAM TO PERFORM THE TYPE OF PROCESSESING CALLED FOR BY THE USER’S ACTION.
CLASS: IS A NAMED GROUP OF PROGRAM CODE.
INSTANCE: A BUTTON CREATED FROM A CLASS IS CALLED AN OBJECT OR SOMETIMES AN INSTANCE OF A CLASS.
INSTANTIATION: IN PROGRAMMING TERMINOLOGY, THE PROCESS OF CREATING A BUTTON OBJECT FROM THE BUTTON CLASS IS CALLED INSTANTIATION.
PROGRAM DEVELOPMENT LIFE CYCLE:
1. GATHER AND ANALYZE THE PROGRAM REQUIREMENTS
2. DESIGN THE USER INTERFACE
3. DESIGN THE PROGRAM PROCESSING OBJECTS
4. CODE THE PROGRAM
5. TEST THE PROGRAM
6. DOCUMENT THE PROGRAM/SYSTEM
7. MAINTAIN THE PROGRAM/SYSTEM
PRESENTATION LAYER: IS THE USER INTERFACE
ASSIGNMENT STATEMENT: MEANS THE VALUE ON THE RIGHT SIDE OF THE EQUAL SIGN IS ASSIGNED TO THE ELEMENT ON THE LEFT SIDE OF THE EQUAL SIGN.
PROCEDURE CALL STATEMENT: THE LEFT AND RIGHT PARENTHESES IMMEDIATELY FOLLOWING THE NAME OF THE PROCEDURE IDENTIFIES THE VISUAL BASIC STATEMENT AS THE PROCEDURE CALL STATEMENT.
PROCEDURE: A SET OF PREWRITTEN CODE THAT CAN BE CALLED BY A STATEMENT IN THE VISUAL BASIC PROGRAM.
EVENT PLANNING DOCUMENT: CONSISTS OF A TABLE THAT SPECIFIES AN OBJECT IN THE USER INTERFACE THAT WILL CAUSE AN EVENT, THE ACTIO TAKEN BY THE USER TO TRIGGER THE EVEN, AND THE EVENT PROCESSING THAT MUST OCCUR.
STRING DATA TYPE ALLOWS EVERY CHARACTER AVAILABLE ON THE COMPUTER TO BE STORED IN IT.
VARIABLE: IS A NAMED LOCATION IN RAM WHERE DATA IS STORED.
STRING VARIABLE: IS A NAMED LOCATION IN RAM THAT CAN STORE A STRING VALUE.
ASSIGNMENT STATEMENT: ONE METHOD TO PLACE DATA IN THE VARIABLE.
NUMBERIC DATA TYPE: MUST BE USED IN ARITHMETIC OPERATIONS
INTEGER DATA TYPE: HOLDS A NONDECIMAL WHOLE NUMBER IN VISUAL BASIC.
INTEGER VARIABLE: IDENTIFIES A LOCATION IN RAM WHERE AN INTEGER VALUE IS STORED.
DECIMAL DATA TYPE: CAN REPRESENT ACCURATELY LARGE OR VERY PRECISE DECIMAL NUMBERS. IT IS IDEAL FOR USE IN THE ACCOUNTING AND SCIENTIFIC FIELDS TO ENSURE NUMBERS

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