WAEC Data Processing 2018 Theory question 104

Theory question 104

Database Management

Paper 2, Section A: Essay
(a) Outline the steps involved in creating the Query By Example (QBE) in figure 1 assuming the table tblcustomer exists already. (b) Write the steps to generate the SQL statement for the action in 4(a).

Diagram for this question
Show the model answer
Model answer

(a) Open the database in MS Access; click Create → Query Design; add tblcustomer and close the Show Table box; double-click (or drag) Lastname, Firstname and Town into the grid; tick Show for all three; in the Criteria row under Lastname type Like 'John'; save the query and click Run.
(b) With the query open, click View → SQL View; the SQL statement is shown:
SELECT tblcustomer.Lastname, tblcustomer.Firstname, tblcustomer.Town FROM tblcustomer WHERE tblcustomer.Lastname Like 'John';

Explanation

Copy the field names, table and criterion exactly from Figure 1.