WEEK 11 Database Design

Agenda Hybrid Review Create Tables Add, Edit Data Create Relationships in MS Access 2010 Queries

CREATE TABLES

Create Tables For the tables for the sample in the Wk10_TableInstanceChart.xlsx

Table Design View Exercise: ◦ Create table for gender

Datasheet View Exercise: ◦ Add data to the gender table

Table Design View Exercise: ◦ Create Ribbon > Table Design in the Tables grouping ◦ Identify your own PK ◦ Moving the order of the rows

Create Table with Lookups Exercise: ◦ Add data to the city entity using a look up wizard as the data type for the province

Add Data to an Entity Based on another entity ◦ Exercise:  Create the students table (studentID, fname, lname and gender fields only)

Edit an Entity Exercise: ◦ Complete the Students table ◦ Go back and look at your default value (note it was not added to previous records entered)

Edit Data in Datasheet View Exercise: ◦ Go back and add the age group and city for each of the students previously entered Datasheet view ◦ Record count ◦ Add a new record ◦ Search for a record ◦ Sort the records

CREATE RELATIONSHIPS

Create Relationships Database Tools ribbon > relationships grouping Exercise: ◦ How to Edit a relationship ◦ How to Create a relationship

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QUERIES

Northwind Database

Single Table Queries Select fields to display Sort by? Simple Conditions ◦ When you enter text into the criteria cell your text should be enclosed in quotes ("") to distinguish it from other expressions and operators that you may need to add.

WORKING WITH TEXT

Matching Text

OR Statement

IN Statement

NOT Statement

NOT IN Statement

Using Wildcards Wildcard is a special character that can stand for either a single character or a string of text

LIKE “Text*” Statement

LIKE “*Text” Statement

LIKE “[letter-letter]*” Statement

WORKING WITH NUMBERS

Working with Numbers For example, where X represents a number: <X finds values less than X. >X finds vales greater than X >=X finds values greater than or equal to X <>X finds vales not equal to X

WORKING WITH DATES

Working with Dates Ensure the criteria cell is type Date/Time Each date must be enclosed by hash marks (#). For example: ◦ <#1/1/98# ◦ finds dates earlier than 1 January 1998

Working with Dates For example: ◦ =#27-Sep-50# ◦ finds dates equal to 27 September 1950

Working with Dates For example: ◦ Between #5/7/98# And #10/7/98# ◦ finds dates no earlier than 5 July 1998 and no later than 10 July 1998

FINDING EMPTY FIELDS

Finding Empty Fields Use the expression Is Null. Conversely, Is Not Null. The expression Null simply means "nothing".

Hybrid / Homework Read Calculating in Access QueriesCalculating in Access Queries Read Calculating Totals in AccessCalculating Totals in Access Read Working out Someone’s AgeWorking out Someone’s Age Watch Multi-Table Queries Part 1 & 212 Database Assignment Part 2

Quiz Time