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Question Answer

► MCQ Exam ON : DBMS

In variable length records to save space we use__________


1)  
2)
3)  
4)  
5)  

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Important MCQ on Related Subject

📌     . In _________ Index every path is of same length
📌     In E-R diagram generalization is represented by
📌     The ______ operator is used to compare a value to a list of literals values that have beenspecified.
📌     An instance of relational schema R (A, B, C) has distinct values of A including NULLvalues. Which one of the following is true?
📌     Which one of the following is not true for a view:
📌     In multiple granularity level locking a transaction is locking a node in Exclusive write mode. At that mode what are the locks that are permitted.
📌     The generated on compilation of data definition language are stored in __________
📌     A primary key is combined with a foreign key creates
📌     A data manipulation command the combines the records from one or more tables is called
📌     Which of the following uses overflow pages?
📌     What techniques are used to retrieve data from more than one table in single SQL STATEMENT?
📌     Which of the following protocols will violate serializability
📌     An index record appears for every search key value in a file and a pointer to the record. This is example for
📌     A file manipulation command that extracts some of the records from a file is called
📌     Which two files are used during operation of the DBMS
📌     A primary key if combined with a foreign key creates
📌     The method of access which uses key transformation is known as
📌     Which of the operations constitute a basic set of operations for manipulating relationaldata?
📌     To delete a particular column in a relation the command used is:
📌     In variable length records to save space we use__________
📌     Insertion of data into B-tree may cause
📌     Consider the join of a relation R with relation S. If R has m tuples and S has n tuples,then the maximum size of join is:
📌     The number of rows in a table is known as
📌     A transaction Ti needs to be redone if it contains
📌     The natural join is equal to :
📌     _________ data type can store unstructured data
📌     _____________ function divides one numeric expression by another and returns theremainder.
📌     _________ is a virtual table that draws its data from the result of an SQLSELECT statement.
📌     Hierarchical model is also called
📌     A table joined with itself is called

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