In a relational schema, each tuple is divided into fields called
Relations
Queries
Domains
All of the above
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- Processed data is called _____
- Which of the following concurrency control schemes is not based on the serializability property?
- DBMS is a collection of _____ that enables user to create and maintain a database.
- ………………… approach reduces time and effort required for design…
- For correct behaviour during recovery, undo and redo operation must be
- Tree structures are used to store data in
- Given the following relation S(SNO,SNAME,CITY) write a query to update the value of CITY to KANPUR for…
- In SQL, testing whether a subquery is empty is done using
- A relation is in attribute of other composite key. if an attribute of a composite key is dependent on…
- Relational Algebra does not have
- Drop Table cannot be used to drop a table referenced by a ______ constraint.
- The division operator divides a dividend A of degree m+n by a divisor relation B of degree n and produces…
- ______is a preferred method for enforcing data integrity
- Protection of data from unauthorized Disclosure results in loss of _______
- DROP is a statement in SQL.
- What are the desirable properties of a decomposition
- If an entity can belong to only one lower level entity then the constraint is
- A relational database developer refers to a record as
- The ______ language consists of SQL statements for operating on the data (insert, Modify, Delete) in…
- The transactions like adding an employee, enrolling a student in a course are examples of _______
- Which two files are used during operation of the DBMS?
- The size of a data item is called its _______, which can be a field of some record or may be a larger…
- Cascading rollback is avoided in all protocol except
- The fact that information in the data warehouse changes far less often and may be regarded as non-real-time…
- As per equivalence rules for query transformation, selection operation distributes over
- The default level of consistency in SQL is
- The normal form that is not necessarily dependency preserving is
- Between DRAM and magnetic disk storage another form of memory, called ______ memory is becoming common…
- SQL server stores index information in the _____system table
- What will be the number of columns and rows respectively obtained for the operation, A- B, if A B are…