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WHAT IS SQL
Hierarchical model is also known by? A hierarchical model is also known as a Tree structure.
Give the Introduction of OBJECT DESIGN Strategies which are selected during system design are carried out in object-oriented design. In this procedure, objects which are identi
Data independence seems that "the application is independent of the access strategy and storage structure of data". In other words, the ability to change the schema definition in o
Describe Database state in details? Database state: The actual data within the database at a particular moment in time is known as a database state.
We face problem of stock Opening balance and closing balance in Minus
Consider the relations EMPLOYEE(emp#, name) ASSIGNED_TO(project#, emp#) PROJECT(project#, project_name, chief) Express the subsequent queries in Relational Algebra (i) Ge
Cardinality of Relationship One-to-One Only one entity of the first set is linked to only one entity of the second set. E.g. A teacher teaches a student. Only one teacher
Compare the two log-based recovery schemes in terms of ease of implementation and overhead cost. Ans: There are two types of log based recovery techniques: deferred update
What are axioms? Axioms or rules of inference give a simpler technique for reasoning about
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