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What does authentication refer?
Authentication refers to the task of verifying the uniqueness of a person.
Answer SQL Queries to extract data from data tables and questions on mapping conceptual data models into relational data model.
Explain the paths in the association network We can analyze use of paths in the association network as given below: Calculate each operation Find associations whic
Forward Recovery (Redo): In this system the committed changes made by a transaction are reapplied to a previous copy of the database. In simpler
Explain the Weak Entity Set An Entity set which does not have sufficient attribute to make a primay key is known as weak entity set. For instance, dependents of an employee in
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What are the advantages and disadvantages of using a database system. Sol. Advantages of Database System (DBMS) : (1) Data Redundancy and Inconsistency: Since differen
What is object identity? An object retains its identity even if some or all the values of variables or explanations of methods change overtime.
Explain the two types of participation constraint. 1. Total: The participation of an entity set E in a relationship set R is said to be total if each entity in E participates i
What are object interaction diagrams? Object interaction diagrams are the diagrams that used to describe order in which messages are communicated in execution of an operation,
What are called multilevel indices? Indices with two or more levels are known as multilevel indices.
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