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...
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...
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...
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 ...
//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. ...
I just finished an interview with a friend for a blog post where he was surprised how differently I was Read More AzureOracle June 25, 2021 Kellyn Gorman Going Old School with Optimization Parameters in Oracle 19c I had an interesting opportunity with a complex Oracle environment that exem...
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...
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