4 VISUAL FOXPRO - AN INTRODUCTION（4全国计算机等级考试二级一个介绍）.pdf

Visual FoxPro - An Introduction:: 33 4 VISUAL FOXPRO - AN INTRODUCTION 4.1 INTRODUCTION Visual FoxPro is a Relational Database Management System (RDBMS), which allows you to work with several logically related tables of data simultaneously. A Table in a database contains a number of Rows and Columns. One row in the table is equivalent to one record and one column is equivalent to one field. 4.2 OBJECTIVES After going through this lesson, you would be able to start Visual Foxpro menus use shortcut keys use Visual Foxpro menus. explain the concept of DBMS 4.3 CONCEPT OF DATABASE MANAGEMENT SYSTEM (DBMS) Before you understand the concept of Database Management System. (DBMS), it is necessary that you understand few basic terms related to DBMS. Let us begin with data. Anything can be data, e.g., a number, name of a person or place, address, etc. When a data is meaningful, it is called Information and a Database is an organized collection of related information. You can use database for 34 :: Computer Applications – retrieving desired information – taking meaningful decision – reorganizing information – processing information Database Management System (DBMS) is a generalized software package used to build and manage the database, i.e., add, modify (edit), update, delete and sort (arrange in a particular order) information in the database. DBMS also helps to retrieve the desired information in the required format from the