2NF


Also found in: Encyclopedia.
AcronymDefinition
2NFSecond Normal Form
References in periodicals archive ?
If the entity set is 2NF, the classifier tries to find for the rule to be matched in decision tree and if it matches with the rules of 1NF, the classifier tries to find the match the rules of 2NF, if there is a match, it further finds for match with the rules of 3NF and if the rules of 3NF is not matched with the entity set, the classifier declares the result that the classification of normal form is 2NF.
Most of the recent works on database normalization are web-based tools without presenting algorithms and define the two notions, 2NF and 3NF, with respect to primary keys only, ignoring the other candidate keys as in [2], [3, [4], [5].
Entry forms can be obtained from dinaspowisbowlingclub.com and should be sent with the pounds 5 entry fee to: Philip Hanley, 5 Cogan Court, Penarth, CF64 2NF (Tel: 029 2021 1599).
Thus, the basic idea is similar to normalization of relational data, when the second normal form (2NF), the third normal form (3NF), or the Boyce-Codd normal form (BCND) are to be achieved.
Pratt and Adamski (2005) state "The most common normal forms are the first normal form (1NF), second normal form (2NF), third normal form (3NF), and fourth normal form (4NF)" (p.
You can find all you need to know to enter at the charity's website: www.thetransplanttrust.org.uk or by writing to The Transplant Trust, 2nd Floor, Albion House, Lewes, East Sussex, BN7 2NF.
If you'd like to join us, you can find all you need to know to enter at the charity's website: www.thetransplanttrust.org.uk or by writing to The Transplant Trust, 2nd Floor, Albion House, Lewes, East Sussex, BN7 2NF.
Jamie Matthewman, Midway, Lincoln Road, Nettleham LN2 2NF.
House Business Centre 12/17 Upper Bridge Street Canterbury, Kent CT1 2NF
The extract also exhibited activity against 2-nitrofluorene (2NF) and sodium azide-induced mutagenesis with S.
When the input set of data dependencies is a set of functional dependencies (or simply FDs) an appropriate normal form may be Second, Third, or Boyce-Codd Normal Form (abbreviated to 2NF, 3NF, and BCNF, respectively).