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WHY SHOULD NULL IN A RELATION BE AVOID AS possible?
Query Processor The query language processor is responsible for taking query language statements or shifting them from the English-like syntax of the query language to a form
Define the terms 1) physical schema 2) logical schema. Physical schema: The physical schema explains the database design at the physical level, which is the lowest lev
Entities Let us first be aware of the question: What are entities? An entity is an object of concern used to show the things in the actual world, e.g., table, car, bo
As with other software, databases can potentially be used for unethical purposes. As a database developer, and a consumer, you should recognize database misuse, and how it may affe
What is recovery management component? Ensuring durability is the responsibility of a software component of the base system known as the recovery management component.
What is meant by heuristic optimisation? Discuss the main heuristics that are applied during query optimisation. Ans: In heuristic optimization, heuristics are employed to r
what is union compatable?
Define Catalog and meta data ? A catalog is a compilation of records elaborating the contents of a particular collection or group of collections. Metadata (Meta data, or someti
what are the limitations of dbms?
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