Types of databases in oracle.
Oracle Database supports various types of databases, including:
1. Single-instance database: This is the traditional type of database, where a single Oracle database instance runs on a single server, and all users access the same database.
2. Multitenant database: This is a new type of database introduced in Oracle Database 12c, where a single Oracle database instance can host multiple pluggable databases (PDBs). Each PDB appears to users as a separate database, with its own set of data files, tablespaces, and schema objects.
3. Data warehouse: This type of database is designed to store and manage large amounts of data for analysis and reporting. Oracle Database provides various features such as partitioning, compression, and materialized views to optimize data warehousing performance.
4. Online transaction processing (OLTP): This type of database is designed for applications that require high availability and fast transaction processing. Oracle Database provides various features such as automatic undo management, transaction recovery, and row-level locking to optimize OLTP performance.
5. NoSQL database: Oracle Database also supports NoSQL databases, which are designed for handling unstructured or semi-structured data. Oracle NoSQL Database is a key-value store that provides high performance and scalability for modern applications.
Overall, Oracle Database provides a wide range of database types to meet the needs of different applications and workloads.