Accounting information systems 12th SIMKIN and norman chapter 04

Chapter 4-1Chapter 4: Organizing and Manipulating the Data in Databases Introduction Creating Database Tables in Microsoft Access Entering Data In Database Tables Extracting Data From D

Chapter 4-1

Chapter 4:

Organizing and Manipulating the Data in

Databases

Introduction

Creating Database Tables in Microsoft Access

Entering Data In Database Tables

Extracting Data From Databases: Data Manipulation Languages

Recent Database Advances and Data Warehouses

Chapter 4-2

Creating Database Tables in Microsoft Access

Database Management Systems

An Introduction to Microsoft Access

Creating Database Tables

Creating Relationships

Chapter 4-3

Chapter 4-4

Introduction to Microsoft

Access

A popular relational database

Used by many businesses and individuals

Used for small database applications

Chapter 4-5

Microsoft Access – Opening

Screen

Chapter 4-6

Creating Database Tables –

Defining Record Format

Field Name

 Names assigned to the data fields

Data Type

 Specified for each data field

 Identifies how to store the data – field properties

Description

 Optional field

 Defines record structures

Chapter 4-7

Creating Database Tables –

Opening Screen

Chapter 4-8

Creating Database Tables –

Record Format

Chapter 4-9

Creating Relationships

Purpose

 Link tables together

 Enable users to create multi-table reports

Steps in Creating Relationships

 Select tables

 Link the tables

Chapter 4-10

Creating Database Relationships – Linking Tables

Chapter 4-11

Creating Relationships –

Multitable Relationships

Chapter 4-12

Creating Records

Utilize datasheet view to input data

Chapter 4-13

Ensuring Valid and Accurate

Data Entry

Data Definition Language (DDL)

Enables users to define record structure

Define individual fields of each record

Chapter 4-14

Tools for Data Validation

Proper Data Types for Fields

Chapter 4-15

Tools for Data Validation

Chapter 4-16

Drop-Down List Example

Chapter 4-17

Validation Rule Example

Chapter 4-18

Creating Referential Integrity

Chapter 4-19

All of the following are examples of DBMSs except:

Chapter 4-20

All of the following are examples of DBMSs except:

Chapter 4-21

An example of a validation rule is:

A An input value must be an integer

B An input value must also have a default value

C An input value must be between 0 and 40

D You cannot delete parent records that have child records associated with them

Study Break #2

Chapter 4-22

An example of a validation rule is:

A An input value must be an integer

B An input value must also have a default value

C An input value must be between 0 and 40

D You cannot delete parent records that have child records associated with them

Study Break #2 - Answer

Chapter 4-23

Tips for Creating Database Tables and Records

Design first

Create tables and records last

Name tables systematically

 Use conventional tbl prefixes

Use mnemonic names for data fields

Assign correct data types to data fields

Chapter 4-24

Tips for Creating Database Tables and Records

Data fields that link tables must be the same data type

Limit the size of text data fields to reasonable lengths

Use input masks

Chapter 4-25

Extracting Data From

Databases

Schema

 All information in a database

 All relationships of the tables

 Map of entire database

Subschema

 Subset of the schema

Chapter 4-26

Creating Select Queries

Chapter 4-27

Query Example

Chapter 4-28

Creating Select Queries

One-Table Select Queries

 Creates a dynaset

 Based on:

 Criteria determining which records to include

 Criteria determining which fields to include from

those records

 Single or Multiple Criteria

Chapter 4-29

Select Query Example

Chapter 4-30

Multi-Table Select Query

Example

Chapter 4-31

Multi-Table Select Query

Example

Chapter 4-32

Creating Action Queries

Chapter 4-33

Query Wizard Queries

Simple query Wizard

Crosstab queries

Find-Duplicates queries

Find-unmatched queries

Chapter 4-34

Query Wizard Screen

Chapter 4-35

Guidelines for Creating

Queries

Spell accurately and be case sensitive

Specify AND and OR operations correctly

Tables must be joined properly

Name queries systematically

Choose data fields selectively

Chapter 4-36

Extracting Data From

Databases

Structured Query Language (SQL)

Example of SQL Instructions

Chapter 4-37

Extracting Data From

Databases

Online Analytical Processing (OLAP)

 Complex, multidimensional data analysis

 Pivot tables

Data Mining

 Utilize a set of data analysis and statistical tools

 Identify relationships, patterns, or trends

Chapter 4-38

Cloud Computing

Form of Internet-based Computing

 Software provided through the Internet

 Processing occurs on a Web of computers

 Expands IT capabilities

Database-As-A-Service (DAAS)

 Outsourcing of databases

Backup Services

Chapter 4-39

 Span longer timeframe than transaction systems

 Optimized data relationships

Chapter 4-40

All of the following are examples of action queries except:

Chapter 4-41

All of the following are examples of action queries except:

A Update query

B Append query

C Delete query

D Find missing data query

Study Break #3 - Answer

Chapter 4-42

SQL is an example of:

A A tool to perform online analytical processing

B A database management system

C A query language

D A multimedia database

Study Break #4

Chapter 4-43

SQL is an example of:

A A tool to perform online analytical processing

B A database management system

C A query language

D A multimedia database

Study Break #4 - Answer

Chapter 4-44

Copyright

Copyright 2012 John Wiley & Sons, Inc All rights reserved

Reproduction or translation of this work beyond that permitted in

Section 117 of the 1976 United States Copyright Act without the

express written permission of the copyright owner is unlawful

Request for further information should be addressed to the

Permissions Department, John Wiley & Sons, Inc The purchaser

may make backup copies for his/her own use only and not for

distribution or resale The Publisher assumes no responsibility for errors, omissions, or damages, caused by the use of these programs or from the use of the information contained herein.

Chapter 4-45

Chapter 4