_____ command can be used to modify a column in a table
alter
update
set
create
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- In a multi-user database, if two users wish to update the same record at the same time, they are prevented…
- _____is a full form of SQL.
- For using a specific database …………… command is used.
- Relational Algebra is
- In 2NF
- Which of the following is not a property of transactions?
- In b-tree the number of keys in each node is than the number of its children.
- The ______ language consists of SQL statements for operating on the data (insert, Modify, Delete) in…
- A top-to-bottom relationship among the items in a database is established by a
- Consider the join of relation R with a relation S. If R has m tuples and S has n tuples, then the maximum…
- The fact that information in the data warehouse changes far less often and may be regarded as non-real-time…
- If two relations R and S are joined, then the non matching tuples of both R and S are ignored in
- ………………… approach reduces time and effort required for design…
- Which of the following ensures the atomicity of the transaction?
- What are the desirable properties of a decomposition
- The part of a database management system which ensures that the data remains in a consistent state is
- In E-R Diagram total participation is represented by
- Tree structures are used to store data in
- _____ command can be used to modify a column in a table
- Which normal form is considered adequate for normal relational database design?
- Which of the following is not a characteristic of a relational database model?
- What is data integrity?
- Which of the following is not a consequence of non-normalized database?
- What is a disjoint less constraint?
- Which of the following is not a recovery technique?
- A transaction is in state after the final statement has been executed.
- The clause in SQL that specifies that the query result should be sorted in ascending or descending order…
- Union operator is a :
- _______ product was acquired by Informix, integrated into its RDBMS and introduced as the Informix Universal…
- Which of the following statement on the view concept in SQL is invalid?