Chapter 1 Introduction to Database
Database Concept Field: a basic data element or attribute of an object Record: a set of fields Table: a set of records to describe of an object Database: one or more related tables
Access Objects Table Query: a subset of a table based on a criteria Form: a friendly interface for entering or modifying a table Report: presenting data in an attractive format
Table View Datasheet view: to add, edit, or delete records Design view: to create and modify fields PivotTable view: to summarize groups of data PivotChart view: to chart the data from PivotTable view
Table Primary key: unique identifier for each record Record selector symbol –Triangle indicates saved to disk –Pencil indicates you are typing Asterisk for the last blank record in table Access automatically saving changes when moving to next record
Filters and Sorting Filter by Selection Filter by Form –for comparative criterion (e.g. >, <) –for “or” filters (e.g. either cosmetics or shoes) Remove Filter button: to display complete table Delete filter: Records, Filter, Advanced Filter/Sort, clear the filter and criteria rows Sorting up to three fields in a table
Relational Database Multiple tables having one-to-many relationship –Primary key is the one side –Foreign key is the many side Tools menu, Relationship, Relationship menu, Show Table Tab, Drag primary key to foreign key to establish the relationship
Points to Remember Database concepts Objects in Access database Table operations (add, delete, edit and sort records) Using existing form and report Form filter or selection filter One-to-many relationships
Assignment Practice Exercises 2, 3 and 7