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Describe relational model? Structure of relational data base Basic structure Database schema Keys Schema diagram Query languages
what would go in order patient#, patient name, patien address, surgeon#, surgeon name, surgery date, surgery type, drug admin
Define access time. Access time is the time from when a read or write request is issued to when data transfer starts.
What is called query processing? Query processing refers to the range of activities included in extracting data from a database.
Define in which normalisation form if an attribute of a composite key is dependent on an attribute of other composite key. Ans: 3NF A relation is in 3 NF if an attribute of
Explain DML with some examples? DML - Data Manipulation Language: statements used for managing data within schema objects. Some examples: • SELECT - retrieve data from the a da
The advantages of a database management system (DBMS) include :- Data integrity and elimination of duplication.
Suppose that in an organisation, an employee may do different roles in dissimilar projects. Say, RAM is doing coding in one project and doing designing in another. Suppose that the
Explain weak and strong entity type ? Weak and Strong entity type: An entity set which does not have a primary key is referred to as a weak entity set. The existence of a wea
1. Determine that the Checkpoints are a part of Ans: Checkpoints are a part of Recovery measures
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