Source: KCSE Computer Studies 2012 - Paper 1 Question Number: 20 (a)(b)(c) Marks: 15 Marks (a) With the aid of a diagram, describe the Hierarchical Database Model. (4 marks)From Topic: Databases From Subtopic: Types of database models Question Level: Form 2 RequirementsCandidates were required to understand and apply Database Design. WeaknessesMany candidates did not attempt this question and those who attempted performed poorly. Expected responses
(b) List three factors that should be considered when developing a database application and give reasons why each should be considered. (6 marks)From Topic: Databases From Subtopic: Creating a Database Question Level: Form 2 Expected Responses Factors
Reasons
(c) (i) Name three types of validation checks during data entry. (3 marks)From Topic: Databases From Subtopic: Creating a Database Question Level: Form 2 Expected Responses
(ii) Differentiate between primary key and index key. (2 marks)From Topic: Databases From Subtopic: Creating a Database Question Level: Form 2 Expected Responses
Advice to the teachersTeachers to guide the students in acquiring the important concepts in database design
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