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Describe the algorithm for updating indices for a single level index when a record is
(i) Inserted (ii) deleted
What will be the modification if there are multilevel indices?
Ans: Inserted: The time it acquires to insert a new data item. This value involves the time it takes to find out the correct place to insert the new data item, also the time it takes to update the index structure.
Deleted: The time it receives to delete a data item. This value involves the time it takes to find the item to be deleted, also the time it takes to update the index structure.
Describe the storage structure of indexed sequential files and their access method. Ans: Index offers a lookup capability to rapidly reach the vicinity of the desired record.
Define Shared locks? Ans: Shared lock: Throughout concurrent execution of transactions, earlier than a transaction can access a data item, it has to obtain a lock on it. Now he
Define Database layer? The database layer defines the data formats used in the database.
What is a Transaction? A transaction is an event which happens on the database. Generally a transaction reads a value from the database or writes a value to the database. If y
It is mandatory that for every table in the LDB hierarchy there should exist one GET statement in the report. False. It is not essential.
Determine the steps of path in association network You can analyse use of paths in association network in the following steps: Examine every operation and see what asso
PRINCIPLES OF DATABASE 1. State the following terms: a) Database b) Database Management System c) Entity d) Attribute e) Relationship 2. Discuss the Three Level Architecture
What is a hash index? A hash index organizes the search keys, with their associated pointers, into a hash file structure.
Explain the components of Database System in details.
Research Value: 7% Due Date: 17-Sep-2018 Return Date: 11-Oct-2018 Length: 700 words Submission method options: Alternative submission method Task back to top You are required to
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