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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
What is schema
East Coast Aquarium Relational Database
Explain how the associations are implemented as classes. A general approach in this case is to transform an association class into a simple class linked to two original classes
Write short notes on Schema diagram. A database schema along with primary key and foreign key dependencies can be depicted pictorially by schema diagram. Every relation appears
Describe substring comparison in SQL. For the relation Person (name, address), write a SQL query that retrieves the names of people whose name starts along with ‘A' and address co
Consider the subsequent relation Professor (Pfcode, dept, head, time) It is assumed that (i) A professor can work in much more than one
how to operate database in access ?
Due date for May 8
, write the relational schema, and draw the new dependency diagrams. Identify the normal forms for each table structure you created
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