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Question 1 Discuss about second normal form and third normal form
Question 2 Write short note on 1) Data Manipulation Language 2) Data Definition Language
Question 3 Define the following terms 2) Entity 2) Keys
Question 4 Write down the characteristics of different types of storage devices. List (Cache, Main memory, Flash memory, Magnetic-disk storage, Optical storage, Tape storage)
Question 5 Differentiate between 1) Relational Data Model 2) Hierarchical Model
Question 6 What is Normalization? Explain different types of normal form
Question: i) Explain the terms data warehousing and data mining. ii) Discuss the importance of the following security principles that a digital firm should amongst others, n
What is a recursive relationship? Give an example not used in the text. A recursive relationship is a relationship among an entity and itself. For example, given the entity PER
For Colorado customers calculate the number of single products ordered. If a product is purchased on multiple orders, it should be counted only single time. The result should conta
Define Hash files organization a. Hashing includes computing the address of a data item by calculating a function on the search key value. b. A hash function h is a functi
What are the several forms of identity? a) Value b) Name c) Built-in
statical data
Q. Describe how an ER schema can be represented by relation schemas and constraints arising from ER design can be mapped to constraints on a relation schema. The entity rela
Explain natural join? Natural Join - Similar as equi-join except in which the join attributes (having similar names) are not involved in the resulting relation. Only one sets
What is an ERD?
The functions of DBA ?
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