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What is E-R model?
This data model is based on real world that having of basic objects called entities and of relationship between these objects. Entities are explained in a database by a set of attributes.
exercise solution
Explain forms based and graphical interface? Forms based and graphical interface: graphical user interface (GUI) is a kind of user interface which permits people to interact
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An object-oriented design process 1. Define the context and modes 2. Designs the system architecture 3. Identifies the principal system objects 4. Identifies concurrency in
Using Column aliases Example: To print column names as NAME and ANNUAL SALARY SELECT ENAME "NAME", SAL*12 "ANNUAL SALARY" FROM EMP;
What is normalization? It is a method of analysing the given relation schemas based on their Functional Dependencies (FDs) and primary key to attain the properties (1).Minim
he SQL query that will return the order number, quantity ordered, price each and total cost of an order (quantity * price each) from the order details table. Label the calculated c
State the Design of Associations Before designing associations, it is essential to know the way they are used. For this, analysis of association traversals is required. It is
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Define an operator that a Relational Algebra does not have Ans: Relational Algebra does not have Aggregation operators.
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