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What is Functional Dependency?
A Functional dependency is shown by X Y among two sets of attributes X and Y that are subsets of R specifies a constraint on the possible tuple that can form a relation state r of R. The constraint is for any two tuples t1 and t2 in r if t1[X] = t2[X] then they have t1[Y] = t2[Y]. This means the value of X component of a tuple uniquely verifies the value of component Y.
Define Fifth Normal form is concerned with Ans : Fifth Normal form is concerned with Join dependency.
Implementation of association as an object Implement as a separate association object, independent of either class, as in Figure. An association object is a group of pairs
How can you connect to the MySQL Server? In order to connect to the MySQL server it is necessary to give the username and password so this be able to done with The following
What subschema expresses ? A subschema expresses the external view. (External schemas are called also called as subschemas)
In this practical assignment, we will run through a complete database application development cycle, starting with the schema design, from an initial data import to database applic
(a) Why did SAP introduce the extended star schema?
We have a new website where I need someone to 1: Inhabit the back end with all the recruitment agencies in the UK. I require someone who is not manually going to do this, but who w
Cyber Transit Ltd keeps up-to-date information on the processing and current position of each dispatched item. Dispatched items are the main concern of the Cyber Transit product tr
Natural Join : It is the similar like Equi join except one of the duplicate columns is removed in the result table. The natural join is the most usually used form of join operation
1. Which model is used to store data in tree structures Ans: Hierarchical model is used to store data in tree structures
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