Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Define multivalued dependency and 4NF.
Ans: Multivalued Dependency - Assume R be a relation schema and let α ⊆ R and β ⊆ R. The multivalued dependency
α →→β
holds on R if, in any type of legal relation r(R), for all pairs of tuples t1 and t2 in r like that
t1[α] = t2[α], there exist tuples t3 and t4 in r like
t1[α] = t2[α] = t3[α] = t4[α]
t3[β] = t1[β]
t3[R - β] = t2[R - β]
t4[β] = t2[β]
t4[R - β] = t1[R - β]
Fourth Normal Form (4 NF) - A relation schema R is in 4NF regarding to a set D of functional and multivalued dependencies if, for all multivalued dependencies in D+ of the
form α →→β, in which α ⊆ R and β ⊆ R, at least one of the subsequent holds:
Question: (a) What do you meant by content management and briefly describe four major components of a Content Management System? (b) Explain key benefits of a Content Manage
In which format database schema is written ? Data base schema is written in the DDL format.
, write the relational schema, and draw the new dependency diagrams. Identify the normal forms for each table structure you created
find the name of supplier who supply some red part
Draw an E_R Model for the following: An organization uses number of items of a equipment to generates goods. Each item is at one LOCATION, of one TYPE and has a DETAILED_DISCRI
Fourth Normal Form (4NF) When attributes in a relation have multi-valued dependency, further Normalization to 4NF and 5NF are needed. Let us first find out what multi-valued d
NEED FOR A DATABASE MANAGEMENT SYSTEM A Database is a structured, persistent collection of data of an organisation. The database management system (DBMS) manages the database o
#question benefits and limitations of data models..
Explain the dependency relationship of object oriented A dependency is a relationship which states that a change in specification of one thing can affect another thing, but n
what is database management system? & why it is required?
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!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd