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Create 1 experiment to demonstrate an aspect of query optimisation by using access-path structures (indexes), decomposition, or denormalisation. Once satisfied with your experiment, post it as a new discussion topic to the AllQuestionsForum on moodle with the subject title _Experiment1_identifier, and the body containing a description of the experiment for all to see (you must use the format described below for your experiments) To Do:
Create 1 practical experiment following this format: Hypothesis (Reason/Theory behind proposing this experiment.): This section must include references to relevant text-books and/or web-resources. Outline what you're trying to prove; Transaction Analysis; Expected Output (how the experiment was supposed to behave); Explain - using examples and references to relevant resources - how the experiment might be expected to behave. If the results don't correlate to what you expected, make an educated comment as to how you believe the MySQL DBMS implementation affected the results. Results:
SQL Query: the exact query being tested (must be a query that clearly demonstrate your hypothesis) State of DB before change EXPLAIN output Time Taken for Query Execution Change you made to the DB (demonstrate your hypothesis) State of the DB after EXPLAIN output Time Taken for Query Execution
Account:
Detail how you carried out the experiment. Detail how you used EXPLAIN or similar DBMS tools. Detail any important considerations such as having to re-load a fresh database, turn off caching etc., state why it is necessary to prepare in the way you suggest.
sir we want er diagram of bank management system in this main menu option as new account,deposit amount,withdraw amount,all acount holder list,modify account,close account
Adding Redundant Associations for Efficient Access Redundant associations do not add any type of information, therefore during design we should actually examine structure of o
Database Errors: An error is said to have occurred if the implementation of a command to manipulate the database cannot be successfully finished either due to inconsistent data or
WHAT IS DSS? WRITE ITS REQUIREMENTS.
Discuss how the one-to-one associations have to be implemented. Some of properties of associations can be implemented directly by providing suitable declarations of the data me
Determine the Strong and Weak Entity Based on the method of foreign key, there might be arise a situation when we have to relate an entity having a primary key of its own and a
Special comparison operator used in where Clause a. between. ...and...It gives range among two values (inclusive) Example: SELECT ENAME, SAL FROM EMP WHERE SAL BETWE
Lack of standards and experience: The lack of standards has considerably limited the potential of distributed DBMSs. As well, there are no tools or methodologies to help users cha
prototype of a distributed information system for a national car part retail outlet chain.
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