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Explain natural join?
Natural Join - Similar as equi-join except in which the join attributes (having similar names) are not involved in the resulting relation. Only one sets of domain compatible attributes included in the natural join are present.
Databases and data warehouses both are databases and both contains number of rows and columns of tables containing data. Data warehouse is really different from databases because d
In case of entity integrity, the primary key may be declared? In a case of entity integrity primary key may be not Null.
Explain the main advantages of DBMS over File Oriented System ?
Preliminary entities and attributes of human resourse management database management system
In how many parts events are classified Events are classified as four types in UML 1. Signals 2. Calls 3. Passing of Time 4. Change in State
Database Administrator One of the main perpose for having the database management system is to have control of both data or programs accessing that data. The person having li
Increases efficiency : Data is stored close to most often used site, therefore retrieval would be faster. Also, data that is not required by local applications is not stored, there
What is bucket overflow and how bucket overflow is handled through Over Flow Chaining or Closed Hashing? Ans: Bucket: unit of storage holding records. Bucket is a disk block
What is the main advantage of the object model? What are its different components? The object model focuses on the logical data structures. Each object model comprises of many
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
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