Oracle uses PL/SQL, which is an extension of SQL. PL/SQL generates more potent SQL queries by fusing the processing power of procedural languages with SQL's data manipulation capabilities. It tells the compiler what to do using SQL and how to do it using a procedural method. 11) What is...
Because of this, so-called soft skills can actually be more important than the actual 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 id...
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...
DBMS Tutorial | Database Management System tutorial and examples on Oracle, SQL, MongoDB, MCQ, Interview Questions with the answer, etc.
DBMS Tutorial | Database Management System tutorial and examples on Oracle, SQL, MongoDB, MCQ, Interview Questions with the answer, etc.
To generate a report of all full and incremental backups from an Oracle Enterprise Manager (OEM) database, you can use the following SQL query. This query retrieves information from the…Read more » Mastering Oracle Database: Interview Questions and Answers ...
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Below are some of the frequently used Physical Standby Data Guard related SQL queries 1) Basic information of database (primary or standby) SQL> SELECT DATABASE_ROLE, DB_UNIQUE_NAME INSTANCE, OPEN_MODE, PROTECTION_MODE, PROTECTION_LEVEL, SWITCHOVER_STATUS FROM V$DATABASE; ...
Oracle NoSQL Database is a distributed, highly performant, highly available scalable key-value database. Oracle NoSQL Database provides key-value pair data management over a distributed set of storage nodes, providing automatic data partitioning, distrib
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 ...