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Types of data independence Data independence can be classified into the following two types: Physical Data Independence: This means that for any change made in the physi
Research Value: 7% Due Date: 17-Sep-2018 Return Date: 11-Oct-2018 Length: 700 words Submission method options: Alternative submission method Task back to top You are required to
What is Relational calculus? Relational calculus is a Non- Procedural language.
need requirement analysis for database management of stock market
Code an Oracle Database trigger to enforce the constraint that an employee can never change his or her department.
What is meant by computing the closure of a set of functional dependency? The closure of F denoted by F + is the set of functional dependencies logically implied by F.
what is query processing?
Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4
Two Phase Locking (2PL) The two-phase locking protocol having of two phases: Phase 1 : The lock acquisition phase : If a transaction T needs to read an object, it wants to
#quCreate a database design specification (Enhanced Entity Relationship Diagram (EERD) and Relational Data Model (RDM)) from the given business description. The RDM must be in 3rd
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