1. Introduction to Access BUS 782

2. Access Objects Tables –Open –Design –New –Wizard Queries Forms Reports Pages

3. Creating a Table Create table in design view –Field name –Field data type Create table by using wizard Create a primary key Enter data

4. Demo Queries Forms

5. Querying Database ISYS 363

6. Basic Query Language Operations Selection Projection Join Aggregates: Max, Min, Sum, Avg, Count –Totals and SubTotals –GroupBy Calculated fields

7. Selection Selection operation retrieves records that satisfy user’s criteria.

8. Projection Projection operation defines a vertical subset of a table and retrieves only the specified fields.

9. Natural Join The two tables must have common attributes: –Key and foreign key. Combines two tables to form a new table where records of the two tables are combined if the common attributes have the same value.

10. Join Example Faculty File: FIDFname F1Chao F2Smith Student File: SIDSname FID S1PeterF1 S2PaulF2 S3SmithF1 Faculty Join Student = Note: What if FID is named AdvisorID?

11. Join Example Student File: SIDSname FID S1PeterF1 S2PaulF2 S3SmithF1 StudentCourse File: SIDCID S1ISYS263 S1Acct101 S3ISYS363 S2ISYS263 S2Fin350 S2Acct101 Course File: CIDCname Units ISYS263 IS IntroPeter3 ISYS363 MIS IntroPaul3 Acct101accounting3 Fin350Finance Intro3 (Student Join StudentCourse) Join Course

12. Aggregate Functions Max, Min, Sum, Count, Avg View/Totals Ex. Student: SID,Sname, GPA, Sex, Major –How many students in this University? –What is the overall average GPA?

13. Aggregates by Group –How many students in each major? –Compare male students and female students average GPA.

14. Examples Customer: CID, Cname, City, Rating Orders: OID, Odate, SalesPerson, CID Queries: –Find customers live in San Francisco. –Produce a customer report that shows CID, Cname, and Rating. –Number of customers in each city City, NumbeOfCustomers –Produce a report that shows the number of orders for each customer: CID, Cname, TotalNumberOfOrders

15. Examples University Database: –Student, StudentCouse, Course –Minimum enrollment example. Order Processing Database: –Customer, Orders, OrderDetail, Product –MIS report –Total amount for each order –Criteria applied to subtotal

16. Calculated Fields Rename a field: –NewName:OldName Define a calculated field: –Tax:salary*.15 –Age:Year(Now()) – Year(DOB) –Amount:qty*price –IIF function Calculated field based on subtotal: –University tuition rules: If total units < 5 then tuition= 600 Otherwise tuition =600 + 200 for each additional unit

17. Criteria >, >=, Range: BETWEEN 1/1/03 AND 12/31/03 Wildcard: –? – match any one character “K?NG” –* - Match any number of characters “C*”

18. Complex Condition University admission rules: Applicants will be admitted if meet one of the following rules: –1. Income >= 100,000 –2. GPA > 2.5 AND SAT > 900 An applicant’s Income is 150,000, GPA is 2.9 and SAT is 800. Admitted? –Income >= 100,000 OR GPA > 2.5 AND SAT >900 How to evaluate this complex condition?

19. Scholarship: Business students with GPA at least 3.2 and major in Accounting or CIS qualified to apply: –1. GPA >= 3.2 –2. Major in Accounting OR CIS Is a CIS student with GPA = 2.0 qualified? –GPA >= 3.2 AND Major = “Acct” OR Major = “CIS” Is this complex condition correct?

20. Complex condition Rating = “A” OR Rating = “B” Cname = “Chao” OR Cname = “Smith” Rating = “A” OR Rating = “B” AND City=“SF” (Rating = “A” OR Rating = “B”) AND City=“SF”

21. Sorting One field sorting Two fields sorting

22. Other Queries Update query Delete query Parameter query CrossTab query

23. Forms Form wizard Main/Sub Form –Based on two tables with 1:M –Based on a query created from two tables with 1:M Pivot Table form –AutoCal

24. Access Tools for Import/Export File/Get External Data File/Export

25. Excel’s Database Tools Data –Sort –Filter –Subtotals –Pivot table/Pivot chart OLAP: On Line Analytical Process DrillDown, RollUp, ReAggregation –Import external data Import data New web query New database query

26. Data/Import External Data New Database Query Select and click OK.

27. OLAP Cube Data/Import External Data/New database query: –Define query –In the last step, choose Create OLAP Cube

28. OLAP Wizard Source of data to be summarized Analysis dimensions

29. Web Query Data/Import External Data/New web query Click table on the web page Use the Save Query button to save web query Web query can be refreshed. Copy/Paste can not.

30. Import Data Data/Import External Data/Import Data

31. Data Consolidation Help, F1