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ERD Diagram of Medical Recruitment Agency?
Construct a clean ans concise ER diagram for the database indicating the cardinality mapping for Employee management syatem
what is natural join?
Domain Constraint It shows that each attribute in a relation has to contain an atomic value only from the corresponding domains. The data types associated with commercial RDBMS
Name the metrics for selecting top algorithm There are a number of metrics for selecting top algorithm: i) Computational complexity: Computational complexity refers to eff
Define the terms entity, attribute, role and relationship between the entities, giving examples for each of them. Ans: Entity: An entity is a "thing" or "object" in th
What are the General Transformation Rules for Relational operations? Ans: The transformation rules transform one relational algebra expression to AN EQUIVALENT ONE 1. E
Assume that you are responsible for selecting a new DBMS product for Sohar Hospital
What are the two types of serializability? The two types of serializability is a) Conflict serializability b) View serializability
Describe the nested-loop join and block-nested loop join. Ans: The block nested- loop join algorithm is as described below: for every block B r of relation R do beg
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