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What is database or database management systems (dbms)? And what's the difference between file and database? Can files qualify as a database?
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What is query in rdbms?
What is 'cross join'? Or what is cartesian product?
Name the different data models that are available for database systems.
Segregate database technology's development.
what are the acid properties in dbms?
How do you performance tune a database?
Why do we need foreign key?
What are the advantages of rdbms?
What is the purpose of using a model?
1.If we have a Salary coloumn in Staff entity with this description the salary must be monetary and >=$35450.00, how we can write it in into schemain SQL? 2. If we have Weight and Marks in Assessment entity and the Weight has the description of this it must be Non-zero percentage. And also the Marks attribute stores the maximum possible raw mark for assessment (e.g., 30), while Weight stores of the weight of this assessment for the paper as a whole (e.g., 10%). If Marks is not specified, then Weight is used for both. How we can convert this into schema in SQL????
I'm need to prepare Month Over Month Sales Growth report. Is there any function available in OBIEE to perform this task.
What is a concurrency problem in dbms?
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