Answer: local indexes areapplied to SQL statements, to define queries on a scale, such as time, etc.,and the global index is useful in queries throughout the records, such asasking for a cell phone number and the like. The total global index can emergethe situation unused need to rebuild...
it created theworld’s first autonomous database, which is a massive feat. It’s that kind of innovation that drives job seekers to this tech giant. That means candidates typically face stiff competition. If you want to stand out, then nailing the Oracle interview questions is a must. ...
With bind variables in SQL, Oracle can cache related queries a single time in the SQL cache (area). This avoids a hard parse each time, which saves on various locking and latching resources we use to check objects existence and so on. BONUS: For rarely run queries, especially BATCH querie...
//howtodoinjava.com/java/collections/useful-java-collection-interview-questions/ 11. Difference between sleep and wait? //howtodoinjava.com/2013/03/08/difference-between-sleep-and-wait/ 12. Also asked some sql queries. Practice yourself. 13. Write a program to print Fibonacci series? public ...
technological know-how. We can teach someone a lot about Oracle APEX and SQL queries but it’s quite possible that we won’t be able to make them more open, talkative, and charismatic, which is why ideally we have to get to know them a little bit better during the initial interview. ...
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5. Describe the use of PL/SQL tables Expected answer: PL/SQL tables are scalar arrays that can be referenced by a binary integer. They can be used to hold values for use in later queries or calculations. In Oracle 8 they will be able to be of the %ROWTYPE designation, or RECORD. ...
PL/SQL declares a cursor implicitly for all SQL data manipulation statements, including quries that return only one row. However,queries that return more than one row you must declare an explicit cursor or use a cursor FOR loop. Explicit cursor is a cursor in which the cursor name is explici...
22. SQL Plus SAMPLE QUESTIONS Q. ) Explain When can hash cluster used?Ans: Hash clusters are useful in cases where :(i) There is a uniform, even and predictable no. of key values.(ii) Queries using equality predicates.(iii) The table is NOT growing constantly, and the keys are ...
NoSQL Database is a sharded (shared-nothing) system which distributes the data uniformly across multiple shards in a cluster. Within each shard, storage nodes are replicated to ensure high availability, rapid failover in the event of a node failure and optimal load balancing of queries. NoSQL...