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3NF Normal Form
A relation schema R is in 3NF if it is in 2NF and for each FD X A either of the following is true
In other words, if every non prime attribute is non-transitively related on primary key.
Section A: Use the following tables to create a database called College. Use SQL commands. Student stuid(primary) lastName firstName
In which format database schema is written ? Data base schema is written in the DDL format.
What are the properties of transaction? There are three properties of transactions :- A) Atomicity B) Consistency C) Isolation
What disadvantage of ODBC does OLE DB overcome? By breaking the features and the methods of a DBMS into COM objects, OLE DB characteristic overcomes a main disadvantage of ODBC
E-R model uses this symbol to represent weak entity set ? A Doubly outlined rectangle symbol is used to represent weak entity set.
Example: Consider the following relations: ROLLNO NAME ADDRESS COURSE_ID 100 Ka
How many physical thing?
What are the time stamps associated with each data item? W-timestamp (Q) denotes the largest time stamp if any transaction that implemented WRITE (Q) successfully. R-timesta
Selective replication: This is a combination of generating small fragments of relation and replicating them rather than a entire relation. The data should be fragmented on require
What was the method in which records are physically stored in a specified order according to a key field in each record ? A method in which records are physically stored within
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