DATA PROCESSING SSS2 FIRST TERM

WEEK 2

DATA MODELS I

Contents

• Definition of Data Model
• Concept of Data Modelling

INTRODUCTION TO DATA MODELLING

The main effort during the system development life cycle (SDLC) was to produce a set of programs that automates a business process. Processing was the key driver for information systems, not the data or information. As the technology and complexity of the system grew, methodologies and modelling techniques were invented to improve the quality of the deliverables and to ensure that inexperienced programmers could follow repeatable SDLC processes.

Definition of Data Modelling

Data Modelling is the process of structuring and organizing data. The data structures are then typically implemented in a database management system. In addition to defining and organising the data, data modelling may also impose constraints or limitations on data placed within the structure.

Managing large quantities of structured and.... View More