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What is the main difference between read-only and update methods? A read-only method does not affect the values of a variable in an object, whereas an update method may alter t
Scenario 1: Power goes out after the first instruction. What happens?
Differance between internal and external schema? Internal and external schema: Internal Schema • Describes the physical storage structure • Uses a physical data model External
What is trigger? Triggers are statements that are executed automatically by the system as the side effect of a modification to the database.
Complexity : A distributed DBMS that is available, reliable, and secure is inherently more difficult than a centralised DBMS. Though, adequate data replication is essential to have
explain cascading rollback
Fifth Normal Form (5NF) These relations still have a difficulty. While defining the 4NF we mentioned that all the attributes depend upon each other. Whereas creating the two ta
1. Which model is used to store data in tree structures Ans: Hierarchical model is used to store data in tree structures
What is an object design? Object design is a very interactive method, which decides the relationship among objects, classifies operations on classes, determines overall system
(a) Why did SAP introduce the extended star schema?
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