Oracle Interview Questions and Answers
ORACLE is primarily a relational database management system. Oracle is also known as Oracle DB or Oracle RDMS. By using Oracle, the user can directly access the objects through the Structured Query Language(SQL).
Oracle is designed to support multiple data models. The best part about Oracle is that it has its network component which allows the communications across the networks. Oracle runs on Windows, UNIX, Linux, and Mac OS. Oracle is written in Assembly language, C & C++.in today's world Oracle database is considered as one of the most reliable database engines in the world. Oracle interview questions we are mentioning below will help you to gain enough of the knowledge about Oracle.
Most Frequently Asked Oracle Interview Questions
A self join means in a table each row is joined to other rows in the table and also to itself
Here, the standard JOIN command is used in which both the tables in the join are the same tables.
SELECT T2.name
FROM category T1
JOIN category T2
ON T2.parent = T1.id
WHERE T1.name = 'Best interview questions.'
Development History
- Flashback Technology recovers the data which is lost or deleted efficiently
- Reliable even when the tasks are demanding
- Manages a large amount of data
- Has the capability to maintain multiple databases.
All your questions related to Oracle will be answered in the Oracle interview questions for freshers mentioned below.
Development History
Oracle was developed by Lawrence Ellison and his co-workers Bob Miner and Ed Oates in the year 1977. The first version ORACLEv2 was released in the year 1979 which was the first available SQL based RDBMS.
Latest Version
Oracle Database 18c is the newest version which got released on 16th February 2018.