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What is meant by object identifiers?
Object-oriented systems use an object identifier to recognize objects. Object identifiers are unique: that is every object has a single identifier, and no two objects have the similar identifier.
What is association? Give an example of association Association is used for establishing relationships among classes. Association describe links among/between classes. For exa
What is Gathering information and Producing ERD Gathering information: This could be a written document that explains the system in question with reasonable quantity of detai
Consider a typical sales invoice that would include the following information. Design a single table to hold all of the information required to store an invoice including this info
brief history,definition,current trends and future trends if any of data fragmentation
database help
find a name whose address is erode from student table
explain the mapping constraints
You are required to design and build a data mart/data warehouse using Oracle. A national bank allocates funding every year for its local branches to provide temporary staff cove
What will be create when a primary key if combined with a foreign key? A primary key if combined with a foreign key it creates Parent-Child relationship between the tables that
How to Insert data in your table from another table? insert into e.g, To insert tuples from employee into N_emp created above, use following statement Insert into N_emp
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