What are some general guidelines for creating and using indexes?
Answer to relevant QuestionsMost query optimization techniques are designed to make the optimizer’s work easier. What factors should you keep in mind if you intend to write conditional expressions in SQL code?Should you create an index on P_CODE? If so, write the SQL command to create that index. If not, explain your reasoning.What type of database I/O operations will likely be used by the query?Multiple requests accessing multiple remote databases, Figure D12.3 Multiple requests, Multiple RemoteDBMSesTo which transparency feature are the query optimization functions related?
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