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What are the DBMS languages? Explain.
Ans: a) Data Definition Languages (DDL): It is employed to specify database schema for example CREATE DROP statements etc.
b) Data Manipulation language (DML): DML is employed to express database queries and update. For example: SELECT, UPDATE, DELETE statements, etc.
The External or View Level The external or view level is the highest level of abstraction of database. It gives a window on the conceptual view, which permits the user to see
Describe about Object oriented design Object oriented design is concerned with developing an object oriented model of a software system to implement known requirements. Many OO
What is an E-R model? Draw an E-R Diagram for the company database with following Descriptions? The company is organized within departments. Each department has a unique name a
What Count function return in SQL? Count function within SQL returns the number of values. (Count function counts all the not null values in the exact column. If we need to cou
Give some encryption techniques? A) DES B) AES C) Public key encryption
what is Storage-Device Hierarchy question
About Attribute inheritance
What is object containment? References among objects can be used to model dissimilar real-world concepts.
What are the three classes of SQL expression? SQL expression consists of three clauses: Select From Where
What was the method in which records are physically stored in a specified order according to a key field in each record ? A method in which records are physically stored within
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