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Explain the θ-join and equijoin
Refer tables Car and Boat which list models of cars and boats and their relevant prices. Assume a customer wants to buy a car and a boat, but she doesn't wish to spend more money for the boat as compared to for the car. The θ -join on the relation CarPrice > BoatPrice generates a table with all the probable options. If the condition employs equality operator then it is also termed as equijoin.
What is candidate key? Candidate Key - A candidate key of an entity set is a minimal superkey, which uniquely identifies each row in the relation.
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
Explain the concept of Modeling With Objects A model is a conceptual representation of a specification, design or system from a particular point of view. A modelling language
Question 1 What are the advantages of DBMS approach in managing data? Question 2 What are the services provided by a database system Question 3 List and briefly describe
entity relationship diagram about finance
Developer is required to do a task including: - Database Normalization - Database Analysis - ERM Diagram Details can be provided and then you can change your bid accord
What is relational model feature? A relational model feature is much more data independence than some other database models.
Oracle & Distributed Databases 1. Differentiate between PL/SQL functions and procedures. 2. Draw the diagram of logical structure of oracle database and explain it in brief.
Define what Immediate database modification technique uses? Ans: Both undo and redo.
Super keys of a relation can have extra attributes. Candidate keys are minimal super key, i.e. such a key have no extraneous attribute. An attribute is known as extraneous if even
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