1. Database Design
Week 10

2. Table Instance Charts

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

4. Types of Data

5. Common Data Types in Access
Autonumber
Text
Memo
Number
Currency
Date/Time
Yes/No

6. Autonumber Use for unique sequential numbering
Commonly used for PK (Primary Key)
Increments by 1
Automatically inserted when a record is added.

7. Text
Used for text or combinations of text and numbers, such as addresses, or for numbers that do not require calculations, such as phone numbers, part numbers, or postal codes.
Stores up to 255 characters.

8. Memo Use for lengthy text and numbers, such as notes or descriptions.
Should be used “sparingly”, because it takes up too much room in database
Stores up to 65,536 characters (if not more)

9. Number
Use for data to be included in mathematical calculations, except calculations involving money (use “Currency” type).
When you are creating a RELATIONSHIP with an “AUTOnumber” field with the “PARENT” table

10. Yes/No
Use for data that can be only 1 of 2 possible values, such as
Yes/No,
True/False,
On/Off.
Null values are NOT allowed

11. Rule
One chart completed for each table
Wk10_TableInstanceChart.xlsx

12. Review Relationship Essentials
Need a primary key
EVERY TABLE NEEDS A PRIMARY KEY
Should be 1st field
Need a foreign key
a Foreign Key is a column in a table used to reference a Primary Key in another table.
A table does NOT necessarily have to have a Foreign Key
Whenever you see: “MANY”—this will be the Foreign Key
Primary key and foreign keys are essential when you create relationships that join together multiple tables in a database

13. Build Time For each of the following scenarios:
Create and write out a business narrative
Create list of ENTITIES/tables
Create the attributes for the table
Create the ERD and the relationship rules
Create a table instance chart

14. HUMAN RESOURCES DEPT. 1
BUSINESS NARRATIVE: This database will collect names of employees, their contact info, skill sets, current salary, job titles and descriptions, hire date, and departments.
TABLES” EMPLOYEE,

15. HUMAN RESOURCES 2

16. HUMAN RESOURCES 3

17. Create Tables in ms access

18. Table Design View
Exercise:
Create table for gender

19. Datasheet View
Exercise:
Add data to the gender table

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

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

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

23. 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)

24. 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

25. Importing “EXCEL” Files
EXTERNAL DATA tab > select the type of file you would like to import
i.e. “Excel”
Click on the BROWSE button, to select the location of the file you would like
Double-click on the file > OK
Select the checkbox: “First Row Contains Column Headings”, if you would like to use the “EXCEL” column headings
Click on the NEXT button

26. APPEND A COPY
External Data tab > Import & Link group > click the Excel button > Browse button > double-click the file you would like
Click: Append a copy of the records to the table > OK > NEXT > FINISH > CLOSE

27. Importing “EXCEL” Files cont.
Select the field name, set the Indexed option to Yes (NO Duplicates) and then click NEXT.
Select your PRIMARY KEY
NEXT> key in a NAME
FINISH > CLOSE, without
Saving the IMPORT step

28. COMPACTING & REPAIRING A DATABASE
DATABASE TOOLS > COMPACT & REPAIR button
•As you add, edit, & delete objects, a database changes in size
•To minimize the size of a database & improve performance should be done on a regular basis
•Rearranges how a fragmented database is stored on disk

29. Want More Information Visit the following site.

30. Queries

31. QUERIES: DEFINITION
Is a QUESTION to the database-asking for a “set of records” from or more Tables/Queries MS Access responds by displaying the requested data is a stored question, rather than a stored response results automatically update, IF table is edited, it allows you to view & operate on “selected subsets” of your data

32. Northwind Database

33. 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.

34. Working with Text

35. Matching Text
From

36. OR Statement
From

37. IN Statement
From

38. NOT Statement
From

39. NOT IN Statement
From

40. LIKE “Text*” Statement
From

41. LIKE “*Text” Statement
From

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

43. HYBRID: MYITLAB HYBRID: MYITLAB
MYITLAB HOMEWORK:

44. Quiz Time