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Question :
(a) Database Management Systems (DBMS) is the foundation of business intelligence. Explain the following concepts related to DBMS:
(i) Entity Relationship Diagram (ii) Normalization (iii) Structured Query Language (iv) Data Mining
(b) Explain TWO disadvantages of a DBMS.
(c) With reference to a high-tech organization, describe with examples, FOUR different types of Knowledge Management Systems (KMS) that are used to share knowledge among employees?
What is called mirroring? The simplest approach to introducing redundancy is to duplicate each disk. This method is called mirroring or shadowing.
#question. acompani datdbase needs to store information about employees (identified by a social security number,with salary and phone as attributes) and departments (identified by
Give short note on the following terms:Dirty pages and ETL a.) Dirty pages. These are buffer pages which comprise modifications which haven't been written to disk. b.
The Database Approach In order to overcome the limits of a file system, a new approach was needed. Hence a database approach emerged. A database is a persistent collection of
The aims of the project are: 1. To enable the students to undertake the detailed design of a specific plant or process 2. The design projects includes: process selection; und
What is the used of specifying alias? Specifying alias: is used to rename column or attribute in a table.
Operator Precedence The basic operators used in SQL are * / - + Operators of the similar priority are evaluated From Left to right Parentheses are used to force priorit
Which operator is Cartesian product in relational algebra? Cartesian product in relational algebra is a binary operator. (It requires two operands. e.g., P X Q)
describe all the tables you have created. ?get table_name, status, num_rows, user_stats in user_tables system view ?get table_name, constraint_name, constraint_type in user_constr
What is the use of keyword ISA? The use of keyword ISA is to show that a class is a specialization of another class.
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