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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.
State the definition of association An association is a structural relationship which specifies that objects of one thing are connected with objects of another. In UML, asso
List out various user authorization to modify the database schema. a) Index authorization b) Resource authorization c) Alteration authorization d) Drop authorizat
What is first normal form? The domain of attribute must contain only atomic (simple, indivisible) values.
Explain the disadvantages of creating a temporary table? If you have already created a temporary table with a shown name and attempting to create a second one with that nam
Relational Algebra is a set of basic operations used to influence the data in relational model. These operations allow the user to specify basic retrieval request. The result of re
Question: (a) One of the steps in the five-step problem-solving model is implementation. Implementation is considered a key step in the problem-solving model. A problem may be
Using the questions found at the end of Chapter 9 in your textbook, complete this homework activity. Students will submit a Word document answering questions 2, 3, and 4.
what is Nested relational model? Explain with examples.
In case of entity integrity, the primary key may be declared? In a case of entity integrity primary key may be not Null.
Determine the language that needs a user to specify the data to be retrieved with no specifying exactly how to get it is Ans: Non-Procedural DML
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