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Define deadlock avoidance. An alternative method for avoiding deadlocks is to needs additional information about how resources are to be requested. Each request requires the s
1. Use the Invoice table structure shown below to answer the following questions: a) Draw the dependency diagram and identify the primary key and all dependencies, including al
explain concept of decomposition?
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
What is the difference between link and reference? The fundamental difference between links and references is that links are symmetrical on the other hand references refer only
Define the Canonical cover Ans: A canonical cover F c for F is a set of dependencies like F logically implies all dependencies in F c , and F c logically entails all dependen
what do you mean by primary key constraint?
Example : Search the name, department number and salary of employees drawing minimum salary in that department. SELECT ENAME, SAL, DEPTNO FROM EMP WHERE SAL IN (SELECT MI
You are required to write a report which evaluates two of the following issues in relation to your case study database: a. Security issues b. Performance issues c. Backup
State The position of object at any moment is called state. An object can have many states depend upon time. After receiving some input instructions, the object can change its
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