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What is trigger? Triggers are statements that are executed automatically by the system as the side effect of a modification to the database.
er diagram on cosmetics.
Surgeons identified by doctor ID (DOCID) operate on patients identified by patient ID (PATID) in operating theaters identified by room numbers (ROOMNO). Each surgeon can operate on
Instructions: Follow the instructions below for completing this project: 1. Creating the Database: · Use the physical table descriptions given below to define and create each t
explain multi key file organisation
Consider a table student (std_id, std_name, date_of_birth, percent_marks, dept_name). Write a QBE query to display names of Computer Science department students who have scored mo
What is Relational calculus? Relational calculus is a Non- Procedural language.
Explain Two phase locking protocol A transaction is consider as to follow the two-phase locking protocol if all locking operations precede the first unlock operation in the tra
Answer SQL Queries to extract data from data tables and questions on mapping conceptual data models into relational data model.
discuss the array implementation of a stack.
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