DATABASE OBJECTS

Putting the Objects to Work

Database Objects

• When creating a database, you are creating a database that will store objects.

Database ObjectsTable Report

Query Macro

Form Module

About Database Objects• Table

– Stores all the data in the datasheet in a format called datasheet

– Similar to an Excel worksheet

• Query– Used to search for and retrieve data from table

using conditions– It is a question you ask

• Form– Data is displayed in one or more tables or

queries in a format similar to a paper form

More About Database Objects• Report

– Data is displayed from one or more tables or queries in a customized format

– It is commonly used to summarize data and to calculate totals

• Macro & Module– These are advanced features that we will not

use in this unit.

Creating Table Relationships• Relationships can be created when a

database contains more than one table• A relationship lets you connect the data in the

tables• The most common type is a one-to-many

relationship• Tables must contain a matching field

– Matching field• A field that appears in both tables• Must have the same data type• Must contain the same values• Also called a common field

One-to-Many Relationships• Primary Table

– Contains the records on the “one” side of the relationship

– One record in the primary table can match many records in the second table (related table)

• Related Table– The table that contains the records on the “many”

side of the relationship– The common field is called the foreign key

• Foreign Key– The common field in the related table– The field is usually the table’s primary key

Queries

• In Office 2007, it is on the Create Tab in the Other section

• Two ways to create:– Create a simple query by using the query

wizard– Create a query using the Query Design View

• Calculated fields:– When a field displays a value that is calculated

using other fields in the query.

Sorting

• Ascending Sort – arranges records from A to Z, or smallest to largest

• Descending Sort – arranges records from Z to A, or largest to smallest

Reports

• Report Tool – Located on the Create Tab in the Reports

section– Create a simple report that includes all the

fields in the selected table or query– Uses a simple columnar format

• Report Wizard– Located on the Create Tab in the Reports

section– Allows you to choose the tables and fields to

use in a report

Report Terms

• Grouping – organizes data on one or more fields into groups

• Sorting – Sort in Ascending or Descending Order

• Layout – Choose between Stepped, Block, and Outline

• Orientation – Choose between portrait and landscape

• Style – Choose from many styles including Apex, Aspect, Civic, Concourse, etc.

Filters• Temporarily displays records in a

datasheet based on the condition you specify

• Types of Filters:– Filter by Selection – you select a field value in a

datasheet and click on the selection button in the Sort and Filter group on the Home Tab

– Filter by Form – you need to display records that contain one or more values based on the values stored in one or more fields

– AutoFilter – menu that opens when you click the arrow on the right side of a field selector