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Write short notes on relational model
The relational model uses a collection of tables to show both data and the relationships between those data. The relational model is an example of a record based model.
Given the following set of functional dependencies {cf?bg, g?d, cdg?f, b?de, d?c} defined on R(b,c,d,e,f,g) a.Find a non-redundant cover. b.Find a canonical cover.
Explain three main attributes of data.
This constraint shows that the key attribute value in each tuple must be unique, i.e., no two tuples have the similar value for the key attribute. This is because the value of the
Consider an information system designed for an online company which provides IT products and services These include desktops, laptops, networking products, IT books, parts, and
Due date for May 8
how many hourse have been spent on a certain project
Hello.I have database access assignment which consist of creation Form, Subform, Calculation, Macros
While using extract datasets it is required to have a special workarea for interface False. It is not required to have a special workarea for interface
Question: (a) Can a set of data requirements be correctly modelled by two or more different ER diagrams? Explain your answer. You may use a small example, if you think it will
Define tuple variable Tuple variable is a type of variable whose domain is the set of all tuples.
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