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The cross-section of twisted pair
The cross-section of each and every strand of the twisted pair is π/4 square mm. A 10-km length of this type of material, with two strands per pair will have a volume of 2π/4 × 10-2 m3. This volume is around 15,708 cm3. With specific gravity of 9.0, each local loop has mass of 141 kg. The phone company therefore owns1.4 × 109 kg of copper. At 3 dollars each, copper is worth about 4.2 billion dollars.
Software failures : In such cases, a software error abruptly stops the implementation of the current transaction (or all transactions), therefore leading to losing the state of pr
Benefits of Hashed file Organisation 1. Insertion or search on hash-key is quick. 2. Best if equality search is required on hash-key. Drawbacks of Hashed file
Is it mandatory to declare all the tables in Report by the key word tables for all the tables that exist in the structure of LDB, and are being explained in the Database part of LD
Discuss The difference between drop table R and delete from R. DROP TABLE command deletes all the records with the table definition. This command will automatically committed
each publisher has uniqe name a mial addrs are also kept on each pubisher.a publisher publish one book.a book publish y one publisher.book identified by isbn.each book writn by one
How many levels can be viewed in Architecture of the database ? Architecture of the database can be viewed as three levels.
Implementing software control To implement software control designer must redesign strategy of state event model which is present in dynamic model. There are three basic ap
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Scenario 1: Power goes out after the first instruction. What happens?
The Transactions- A transaction is definite as the unit of work in a database system. Database systems that deal with a huge number of transactions are also termed as transaction p
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