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What is transaction?
Collections of operations that form a single logical unit of work are known as transactions.
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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
What is Trigger? A trigger is a SQL procedure that initiates an action when an event (INSERT, DELETE or UPDATE) occurs. Triggers are kept in and managed by the DBMS. Triggers a
project on dbms
limitations and benefits in database tecknowlagy
How to create a table from existing table? Create table as e.g, To create a new table ‘N_emp' with employee names and their identification numbers only from employee ta
Q. Explain data aggregatio n and discuss different design constraints. Sol. Aggregation One limitation of the E-R model is that it cannot express relationships amon
assignment
For the relations R and S given below: R S A B C 1 4 7 2 5 8 3 6 9
What is Cross Product? Simply Cross product is Binary Operator
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