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Overlapping Key is a type of candidate key which occurs in BCNF (Boyce –Codd Normal Form).In the difference between 3NF and BCNF Example : A 3NF table which does not have multiple overlapping candidate keys is guaranteed to be in BCNF. Depending on what its functional dependencies are, a 3NF table with two or more overlapping candidate keys may or may not be in BCNF.
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What ensures the value of the foreign key matches another tables primary key?
It is the DBMS that ensures the value of the foreign key matches another table's primary key when referential integrity constraints are enabled within the DBMS
What is secondary indexes in dbms?
secondary index is a key which is created other than primary key, to speed up processing.
Could DBMS being the key for the billionaires of the future?
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Definition of key in dbms?
It is a pool of data through which data are enter into into the table for data management.
Why relation have key in DBMS?
A software system that facilitates the creation and maintenance and use of an electronic database
What are the types of dbms attributes?
Types of Attributes in Dbms areKey or non key attributesRequired or optional AttributesSimple or composite AttributesSingle-valued and multi-valued AttributesStored, Coded or derived Attributes
Non-prime attribute in DBMS?
Prime attribute are part of any candidate key. Non-prime attribute are not part of any candidate key.
What are highlights of DBMS?
NA_ what are highlights of advanced DBMS what are highlights of advanced DBMS what are highlights of advanced DBMS
Define key in dbms with example?
Supper Key- s a set of one or more attributes that taken collectively and allow us to identify entities with in entity set.
Is java DBMS?
no, Java is not dbms.. Java is a programming language Dbms is database
What are events that have one or more outcomes in common?
They are overlapping events.They are overlapping events.They are overlapping events.They are overlapping events.
Is SQL DBMS or RDBMS?
dbms
