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What is NULL? Simply NULL means not in value.
Define object-relational systems? Systems that give object-oriented extensions to relational systems are known as object-relational systems.
How to Insert data in your table from another table? insert into e.g, To insert tuples from employee into N_emp created above, use following statement Insert into N_emp
Copy Data from One Database to another Database Project Description: I am having two MySQL databases with same tables. I just need to copy one Data from one to another dat
what is cascading rollback
Explain current page table and shadow page table. The key idea behind the shadow paging method is to maintain two page tables during the life of the transaction: the current pa
Related fields in a database are grouped in which form? Related data fields in a database are grouped to form a data record. (A record is a collection of related fields)
Differentiate between a subquery and a join If we need to acquire information from one or more tables after that either subquery or join can be used. If the columns which are t
compare the features of oracle RDBMS with MySQL and Microsoft SQL server
WHAT IS MEANT BY E-R MODEL
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