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Which is another name for weak entity?
Child is another name of weak entity.
Explain data dictonary on oracle ? Data Dictionary - Data dictionaries are the system tables in which contain descriptions of the database objects and how they are structured.
ER diagram on cosmetics
Give the general form of SQL query? Select A1, A2............., An From R1, R2..............., Rm Where P
What kind of advantages to copying records from one table to another? -) When an algorithm that modifies a table is used after that it's safer to work with the copy -) When
System level permissions : With the use of data dictionary you can view them. Let us take the table name as user_sys_privs (used in oracle). DESCRIBE USER_SYS_PRI
Determine object representation As a designer, we must choose properly that when to use primitive types in representing objects and when to combine groups of related objects,
What are the various properties of Relational tables? Relational tables have 6 properties: 1. Each row is unique. 2. Column values are of the same kind. 3. Values are
Increased parallelism : Since the replicated date has several copies a query can be distributed or can be answered from the smallest loaded site. Also, with more replicas you have
Which language has presently become the defacto standard for interfacing application programs along with relational database system? The language which has recently become the
Define the phases of two phase locking protocol Growing phase: a transaction may get locks but not release any lock. Shrinking phase: a transaction might be release locks bu
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