Oracle Database, like most RDBMS, uses the standardized programming language SQL (Structured Query Language) to create database structures, manage records, perform actions, or retrieve contained data. Oracle’s own programming language PL/SQL, in turn, is closely related to SQL and lets you add Oracle programming extensions to SQL. To structure the databases, Oracle uses row and column tables in which data points are linked via attributes. This makes cross-table access efficient and time effective.
The architecture of Oracle database systems consists of a database for storing database files, one or more database instances for data management, and one or more listener processes that connect database clients to database instances. Here, logical and physical data structures are separated into Oracle databases. These include physical and logical storage structures:
- Physical storage structures: Data files, control files (with database metadata), and red-log files (for documenting changes).
- Logical storage structures: Data blocks and tables, extents (for grouping logical data blocks), segments (extent records) and tablespaces (logical segment containers).
The clear structure of Oracle databases ensures that data is reliably managed with maximum security measures thanks to data and network encryption, strict authentication, authorization, and authorization analyses. In addition, Oracle supports Java and retrieves Java programming with PL/SQL.