Ppt Lesson 13

Lesson 13Databases

Unit 2—Using the Computer

Computer Concepts BASICS - 22

Objectives

Define the purpose and function of database software.

Identify uses of databases. Identify and define the components of a

database.Plan a database.Create a table using a wizard.


Objectives (cont.)

Enter records in a table.Add a form using a wizard.Create a query using a wizard.Create a report using a wizard.


Database Software Defined

A database is a collection of related data. Address lists Membership lists Customer files Inventory files

You can merge Database files with other documents, such as letters and labels.


Database Structure

Database structure Field: Individual piece or item of informationRecord: Collection of related fieldsTable: Group of records


Creating a New Database

Start Access and click Blank Database. The database is given a name when Access

starts.The database is made up of objects.

Tables Queries Forms Reports


Creating a Table

Enter field information. Field names can have up to 64 characters

and spaces. Keep field names short and descriptive.

Identify data type. Identify the type of data to be entered. Data types include text, number, memo,

currency, and Yes/No.


Creating a Table (cont.)

Include a description. Describe information in the field; a description

is not always necessary.Complete the Field Properties items.

This section is for any special formatting that may be needed, such as the size of the field.


Creating a Table (cont.)

Identify the primary key field. This uniquely identifies a field for each

record.Save the table.


Adding Records to a Table

Two options to enter data Enter data in Datasheet view. Enter data in Form view.

Navigating in Datasheet view:


Printing a Table

Print from Datasheet view.Print in landscape orientation.Print all records or selected records.


Sorting a Table

Arrange records in order. Ascending order arranges records from A to Z

or smallest to largest. Descending order arranges records from Z to

A or largest to smallest.


Modifying the Table Structure

Insert or delete fields. When a field is deleted, all data in the field is

deleted.Change formatting features.Change data types.


Data Types


Creating and Using Forms

A form is an object you use to input, maintain, view, and print records in a database one record at a time.

You can format a form with graphics.


Querying a Database

A query is a question you ask about data stored in a database. Search for specific records that meet given

criteria. Comparison operators are used to match

criteria.


Querying a Database (cont.)

Comparison operators Equal Not equal Greater than Greater than or equal to Less than Less than or equal to Between and And


Creating and Using a Report

Reports provide the contents of a database in customized formats.

Reports summarize data.Reports may include all or selected

records.


Summary

Databases allow for organizing, storing, maintaining, retrieving, and sorting data.

The components of a database are objects. These include tables, queries, forms, and reports.

You should plan the database structure first and then create it.


Summary (cont.)

After the table structure is created, you add records to the table.

Records can be sorted in ascending or descending order.

You can create a form to enter records in a table.

Forms are designed to simplify data entry.


Summary (cont.)

You can design a query to find records that meet specified criteria.

A report is a formatted display of table records. In a report, you can organize, summarize, and print all or a portion of the data.

Ppt Lesson 13

Technology

Transcript of Ppt Lesson 13