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I need help for my Uni assignments
what are the main characteristics of database
discuss the array implementation of a stack.
Write a query that display ename annual salary and comm from emp table
What is the purpose of storage manager? The storage manager is responsible for the following a) Interaction with the file manager b) Translation of DML commands in to low
Give detail description on Transactions. - Using transactions we can group all SQL commands into a single unit. - Transaction begins with some task and finishes only when a
Describe the difference between a one-to-many and a many-to-many relationship. Which logical data structures comprise one-to-many and which comprise many-to-many relationship?
1. Which model is used to store data in tree structures Ans: Hierarchical model is used to store data in tree structures
Explain four causes for failures in data warehouse projects
Define Assertions in SQL a. An assertion is a predicate that is expressing a condition we wish the database to always satisfy. b. Domain constraints, functional dependency
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