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The issues relating to the Design of the Physical Database Files
Physical File is a file as stored on the disk. The major issues relating to physical files are:
• Constructs to link two piece of data:
• Sequential storage.
• Pointers.
Question 1 What are the advantages of DBMS approach in managing data? Question 2 What are the services provided by a database system Question 3 List and briefly describe
Explain sorted File with advantages? Sorted file The sort utility shall perform one of the subsequent functions: 1.Sort lines of all the named files together and write the
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.
1. Determine that the Checkpoints are a part of Ans: Checkpoints are a part of Recovery measures
What are the key features of Oracle? Key features of Oracle are as follows: • Read Consistency • Concurrency • Locking Mechanisms • Quiesce Database • RAC • Portability
Give detail description on Transactions. - Using transactions we can group all SQL commands into a single unit. - Transaction begins with some task and finishes only when a
What is a super key? A super key is a set of one or more attributes that collectively permits us to recognize uniquely an entity in the entity set.
How to create values of structured type? Constructor functions are used to make values of structured types. A function with the similar name as a structured type is a construct
what benefit can a company gain by managing its own infrasture and services
It can be easily defined as: The database must not have any unmatched foreign key values. The term "unmatched foreign key value" means a foreign key value for which there doe
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