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Explain about relational database management systems?
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You have a table with three columns: amount1, amount2, and amount3 in a single row only one of these three columns will have a value and the other two will be null. Write a sql query to retrieve the values from these columns?
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Explain about the database management systems.
What are the types of database model?
Explain about the hierarchical model of the database?
What is an application role and explain a scenario when you would use one?
can you give me the syntax of named procedure??
What is the maximum length of an extended property?
Explain about a primary key?
What are the disadvantages of cursors? How can you avoid cursors?
What are defaults? Is there a column to which a default can't be bound?
Explain about the storage and physical database design?
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