1. ACCESS CHAPTER 4 Tables and Queries Learning Objectives: Define table structure Enter data into a table Alter table structure Set a table’s field properties Join tables and establish referential integrity Create single table queries Create queries involving multiple tables, derived column values, and expressions Create queries with an outer join relationship Create parameter queries

2. ACCESS OBJECTS: Tables: All database information is stored in tables comprised of rows (attributes) and columns (tuples) Queries: A question you ask about one or more tables in your database Forms: A simple way to enter, change, or display data Reports: A convenient way to consolidate and group information that is stored in a database for publication or reporting purposes.

3. TASK 1. create a table from scratch and enter data into it Exercise 4.1: creating the ‘Customer Table’ structure Exercise 4.2: defining the table Exercise 4.3 & 4.4: populating the ‘Customer Table’ Print ‘Customer Table’ TASK 2. alter table structure - adding a column to a table Exercise 4.5: adding a column to the ‘Employee Table’ Exercise 4.6: entering values in the EmployeeDivisionID column TASK 3. establish referential integrity Prohibiting removal of a parent table row until all the rows in another table referring to the parent table are first removed in called referential integrity. Exercise 4.7: establishing referential integrity Exercise 4.8: display related tables Add all tables to the relationships window; adjust their size and position to have the table titles and contents shown completely as Figure 4.14; print the relationships. TASK 4. set a table’s field properties Exercise 4.9: setting field properties for the EmployeeWorkPhone field Exercise 4.10: setting field properties for the Employee Commission field TABLESQUERIES TASK 1. create and use a query Exercise 4.11: creating a one-table query Exercise 4.12: creating a two-table query using a comparison operator Complete Exercise 4 on page 206 and print the resulting dynaset Read ‘Using Logical Operator in Query Criteria’ section on page 192 Complete Problem 2 on page 207 and print the resulting dynaset TASK 2. perform calculations with queries Exercise 4.13: writing expressions in queries Exercise 4.14: using summary functions in a query Exercise 4.15: creating an outer join query Exercise 4.16: creating a parameter query Complete Problem 3 on page 207 and print the resulting dynaset Complete Problem 4 on page 207 and print the first three pages of the resulting dynaset ACCESS CHAPTER 4 Tables and Queries