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State the Component Diagram
A component diagram represents a set of component and relationships among them. In a dynamic model, component diagram is used to model physical components for example executable releases, databases, libraries, adaptable systems or files. It has components, interfaces, subsystems, packages, generalization, association, dependency, and relationship. The notation for components and relationship among components is shown as:
Let us now talk about the relational operations: SELECT The select operation is used to select few specific record from the database based on different criteria, This is a un
What is data independence? Data Independence: Techniques which permit data to be changed without affecting the applications in which procedure it. There are two types of data
Explain in details about Data Sharing
What kind of advantages to copying records from one table to another? -) When an algorithm that modifies a table is used after that it's safer to work with the copy -) When
Explain the steps for reduction of E-R model into relational model. Ans:(a) Entity set in E-R model will be considered as table name in relational Model. (b) Attributes of e
What is Structured Query Langauge (SQL)? SQL is a powerful set-oriented language which was formed by IBM research for the databases that adhere to the relational model. It havi
Example :; transfers transfer_amount from x's account to y's account ; Supposes x&y both accounts exist TRANSACTION (x, y, transfer_amount) Start transaction IF X AND Y
Which data type can store unstructured data? Raw data type can store unstructured data.
Logical Operators Rules of Precedence: Order evaluated Operator 1 All comparison operators 2
What are called jukebox systems? Jukebox systems have a few drives and numerous disks that can be loaded into single of the drives automatically.
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