Interested to Buy Any Domain ? << Click Here >> for more details...
Define candidate key, alternate key, composite key?
- 30 Answers
- 144784 Views
- IAS, IBM, I also Faced
- E-Mail Answers
Answer Posted / koteswararao bora
candidate key:the minimum set of attributes which uniquely
identifies the touples in a table .
primary key:any candidate key choosen by the developer is
called primary key.
composite key: a candidate key which have more than one
attribute is called composite key.
alternate key: a candidate key other than primary key
is called alternate key.
| Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
Explain about a primary key?
Explain about the relational database?
Explain about relational operator join?
What are the types of database model?
What is data modeling with example?
State the acid rules?
What is dbms and its application?
How can I detect whether a given connection is blocked?
Who are naive users?
A) Which two are benefits of Teradata's support for ANSI Standard SQL? (Choose two.) 1.data is distributed automatically 2.queries get optimized to better plans 3.submit queries from other database systems 4.can interface with BI tools B) Which statement is true when comparing the advantages of third normal form to star schema? 1.Star schema tends to have fewer entities. 2.Star schema requires additional data storage. 3.Third normal form tends to have fewer entities. 4.Third normal form requires additional data storage. C)Which two sets of functions does the Parsing Engine (PE) perform? (Select two.) 1.sorting, formatting, and aggregating of the final answer set 2.flow control of the data to and from the participating tables 3.SQL statement interpretation, syntax validation, and semantic evaluation 4.dispatching the step execution sequence to the AMP via the BYNET D) Which two can be achieved with Teradata Active System Management (TASM)? (Choose two.) 1.disable hardware 2.react to hardware failure 3.influence response times 4.collect metadata E) Which three mechanisms can be used to ensure security within the Teradata Database? (Choose three.) 1.views 2.spool limits 3.roles 4.access rights 5.profiles
Explain the role of indexing in databases?
Who are end users in dbms?
What is the physical representation for a many-to-many relationship?
What is the database development process?
explain detail about ftp in datastage?
