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  2. Shard (database architecture) - Wikipedia

    en.wikipedia.org/wiki/Shard_(database_architecture)

    Horizontal partitioning splits one or more tables by row, usually within a single instance of a schema and a database server. It may offer an advantage by reducing index size (and thus search effort) provided that there is some obvious, robust, implicit way to identify in which partition a particular row will be found, without first needing to search the index, e.g., the classic example of the ...

  3. Partition (database) - Wikipedia

    en.wikipedia.org/wiki/Partition_(database)

    Database partitioning refers to intentionally breaking a large database into smaller ones for scalability purposes, distinct from network partitions which are a type of network fault between nodes [1]. In a partitioned database, each piece of data belongs to exactly one partition, effectively making each partition a small database of its own [1].

  4. Oracle Database - Wikipedia

    en.wikipedia.org/wiki/Oracle_Database

    Oracle Database 23ai: 23.4.0 On May 2, 2024, Oracle Database 23ai [10] was released on Oracle Cloud Infrastructure (OCI) as cloud services, including OCI Exadata Database Service, OCI Exadata Database Cloud@Customer, and OCI Base Database Service. It is also available in Always Free Autonomous Database.

  5. Object-PL/SQL - Wikipedia

    en.wikipedia.org/wiki/Object-PL/SQL

    Database objects are concepts that refer to relational or sequential databases and persist being valid in new models. Tables , triggers , columns , indexes are examples of database objects, [ 7 ] which are present in O-PL/SQL, but with the same meaning of the notion of Java objects, specifically an element of a set that has its existence ...

  6. Database schema - Wikipedia

    en.wikipedia.org/wiki/Database_schema

    The database schema is the structure of a database described in a formal language supported typically by a relational database management system (RDBMS). The term " schema " refers to the organization of data as a blueprint of how the database is constructed (divided into database tables in the case of relational databases ).

  7. Oracle RAC - Wikipedia

    en.wikipedia.org/wiki/Oracle_RAC

    Oracle RAC allows multiple computers to run Oracle RDBMS software simultaneously while accessing a single database, thus providing clustering. In a non-RAC Oracle database, a single instance accesses a single database. The database consists of a collection of data files, control files, and redo logs located on disk.

  8. Oracle Rdb - Wikipedia

    en.wikipedia.org/wiki/Oracle_Rdb

    Interactive access to the Oracle Rdb can be by SQL (Structured Query Language), RDO (Relational Database Operator), or both. High level languages usually access Oracle-Rdb by: embedding RDO statements in the source file then running it through a precompiler (example: "file.RCO" is pre-compiled into "file.COB")

  9. PL/SQL - Wikipedia

    en.wikipedia.org/wiki/PL/SQL

    Implementations from version 8 of Oracle Database onwards have included features associated with object-orientation. One can create PL/SQL units such as procedures, functions, packages, types, and triggers, which are stored in the database for reuse by applications that use any of the Oracle Database programmatic interfaces.