What are the differences between hash join, merge join and nested loops?
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Describe concurrency control.
Define entity, entity type, and entity set.
Explain the different types of join operations?
What is record in a database?
How can I join two tables in database?
What is the purpose of sql?
describe and contrast a trigger and a procedure.
user says the db performance is slow or yesterday the query runned 1min and today its taking 30 min. how to trouble shot or were to start with?
What is index and also explain types of indexing in dbms?
What is the concept of sub-query in terms of sql?
What is the definition of database management system?
What is database management definition?
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