Oracle

What is Oracle?

• Oracle is a type of fruit.

• Oracle is a type of bird.

• Oracle is a type of car.

• Oracle is a multinational computer technology corporation.

What are the main features of Oracle database?

• Limited security and performance optimization

• Low availability and scalability

• No backup and recovery capabilities

• High availability, scalability, security, performance optimization, backup and recovery capabilities, support for various data types and structures

Explain the concept of Oracle PL/SQL.

• Oracle PL/SQL is a markup language for web development.

• Oracle PL/SQL is a procedural language extension for SQL in Oracle databases.

• Oracle PL/SQL is a NoSQL database management system.

• Oracle PL/SQL is a front-end programming language.

What is the role of Oracle DBA?

• To pilot airplanes

• To design software applications

• To manage and maintain Oracle databases

• To perform surgery

How does Oracle ensure data security?

• By using outdated security protocols

• Through blockchain technology

• Through encryption, access controls, auditing, data masking, and security policy management tools.

• By sharing data openly with third parties

What is the difference between Oracle SQL and PL/SQL?

• Oracle SQL and PL/SQL are the same thing.

• PL/SQL is used for querying data, while Oracle SQL is used for writing procedural code.

• Oracle SQL is used for querying data, while PL/SQL is used for writing procedural code.

• Oracle SQL is used for writing procedural code, while PL/SQL is used for querying data.

What are the different types of indexes in Oracle?

• Hash Indexes

• Sparse Indexes

• B-Tree Indexes, Bitmap Indexes, Function-Based Indexes, Reverse Key Indexes, Domain Indexes

• Clustered Indexes

Explain the concept of Oracle RAC.

• Oracle RAC allows multiple instances to access a single database simultaneously, providing high availability and scalability.

• Oracle RAC is a standalone database system

• Oracle RAC only allows one instance to access the database

• Oracle RAC is not designed for high availability

What is Oracle GoldenGate used for?

• Automobile maintenance

• Real-time data integration, replication, and data exchange

• Weather forecasting

• Cooking recipes

How does Oracle handle data concurrency?

• Oracle employs time travel to manage data concurrency

• Oracle relies on telepathic communication for data concurrency

• Oracle handles data concurrency through mechanisms such as locking, isolation levels, and multi-versioning.

• Oracle uses blockchain technology for data concurrency