Explain the need for the bcnf normal form, Database Management System

Assignment Help:

Surgeons identified by doctor ID (DOCID) operate on patients identified by patient ID (PATID) in operating theaters identified by room numbers (ROOMNO). Each surgeon can operate on a number of patients each day, but an operating theatre can be used only once on any given date. The type of the operation (OPTYPE) performed by a surgeon on a patient and its outcome (OPRESULT) and the date of the operation (OPDATE) is recorded. Each operation is performed by a single surgeon on a single patient.

Given the relation:

OPERATIONS(DOCID, PATID, ROOMNO, OPDATE, OPTYPE, OPRESULT)

i) identify the functional dependencies for the relation OPERATIONS

ii) give relation key(s)

iii) give the highest normal form of relation OPERATIONS

Briefly explain the need for the BCNF Normal form and give an example of a relation that is in 3NF, but not in BCNF. Avoid using the example(s) given in lectures.

For relation R(Q, R, S, T); and functional dependencies F = {Q -> S, S -> Q, R -> T}, find the relation key(s) and give the highest normal form for R.


Related Discussions:- Explain the need for the bcnf normal form

What is system r?what are its two major subsystems?, System R was develop...

System R was developed and designed over a period of 1974-79 at IBM San Jose Research Company. Its purpose was to illustrate that it is possible to create a Relational System tha

What is meant by the degree of relationship set, What is meant by the degre...

What is meant by the degree of relationship set? The degree of relationship type is the number of participating entity types.

Differentiate between key and superkey, Differentiate between Key and super...

Differentiate between Key and superkey? Key and superkey - A key a single attribute or a combination of two or more attributes of an entity set in which is used to identify o

Explain the term- collation, What is Collation Collation is a kind of ...

What is Collation Collation is a kind of sort order. There are majorly 3 types of sort orders, namely: i.) Dictionary case insensitive ii.)Dictionary - case sensitive

File organization, what is file organization? what are file organization te...

what is file organization? what are file organization techniques.explain in detail? explain random file organization technique, multikey file organization technique?what is indexin

Explain function group, What is a function group? A function group is ...

What is a function group? A function group is a collection of logically related modules that share global data with every other.  All the modules in the group are contained in

What is primary key, What is Primary key? Primary Key - Primary key i...

What is Primary key? Primary Key - Primary key is one of the candidate keys which uniquely identifies each row in the relation.

Development of an ER diagram and database implementation, i want answers th...

i want answers this assignment now if yiu can maket for me now ?

Limitations of file based system, Limitations of File Based System The...

Limitations of File Based System The file-based system has some limitations. The limitations are listed as follows: Isolation and separation of data: When the data is

Decomposition properteis, what is lossless & dependency preserving decompo...

what is lossless & dependency preserving decomposition ?

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd