Database Management System
DBMS A software package that allows users to create, retrieve and modify databases. A database is a collection of related tables. A table is a collection of related records. A record consists of a number of fields. A field may be a number, a string, a date, or a boolean value etc.
Features Database – collection of table Table – field name, type, width, key field Manipulation – delete, append, edit/modify Viewing – order, filter, index Reporting – label, report, order, filter Searching – go to record, locate, seek Query – query wizard, query language(SQL)
Create Tables Create a table and specify the –Field Name –Type –Width –Index
Viewing and Editing Browse –Edit/change content –Filter –Order –Selected fields
Modify data in a table Edit Append Delete (logically) –and remove(physically) –scope
Table Structure Modify table structure –Field name –Field type –Field width –Insert field –Delete field
Query Query wizard –Create query –Select table –Select fields –Filter records –Sort records –Limit records –Save query SQL (Structured Query Language)
Report Create report/labels – wizard Select fields Select style Select layout Sort records Save Run report