Rusq.org explains what Oracle means
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What is Oracle definition?
- Oracle is one of the largest vendors in the enterprise IT market and stands for its flagship product, a relational database management system (RDBMS) formally known as Database Oracle data. Database software sits at the heart of many corporate IT environments, supporting a mix of transaction processing, business intelligence and analytics applications.
- So what is Oracle?
- An Oracle database is a collection of data that is treated as a unit. The purpose of a database is to store and retrieve related information. A database server is the key to solving information management problems.
- In general, a reliable server manages large amounts of data in a multi-user environment so that many users can access the same data simultaneously. All this is done while providing high performance. A database server also prevents unauthorized access and provides effective solutions for failure recovery.
- Oracle Database is the first database designed for enterprise grid computing, the most flexible and cost-effective way to manage information and applications. Enterprise Grid creates large groups of servers and modular storage to industry standards.
- With this architecture, each new system can be rapidly provisioned from a pool of components. No peak workload is required, because capacity can easily be added or reallocated from resources as needed.
- Databases have a logical structure and a physical structure. Due to separate physical and logical structures, physical data storage can be managed without affecting access to logical storage structures.
Oracle Database Architecture
- What is Oracle? After understanding the concept of Oracle, let’s explore its architecture.
- Like other RDBMS software, Oracle Database is built on top of SQL, a standardized programming language that database administrators, data analysts, and other IT professionals use. used to manage the database and query the data stored in it.
- Oracle software is tied to PL/SQL, an implementation developed by Oracle that adds a set of proprietary programming extensions to standard SQL – a common practice among RDBMS vendors. Oracle Database also supports programming in Java, and programs written in PL/SQL or Java can be called from other languages.
- Additionally, like other relational database technologies, Oracle Database uses a row and column table structure that connects related data elements in different tables; therefore, users do not have to store the same data in multiple tables to satisfy processing needs.
- The relational model also provides a set of integrity constraints to maintain data accuracy; those checks are part of a broader adherence to the principles of atomicity, consistency, isolation, and robustness – known as ACID properties – and are designed to ensure that interfaces database translations are handled reliably.
- From an architectural point of view, an Oracle database server consists of a database to store data and one or more instances of a database to manage the files contained in the database. Databases have a combination of physical and logical storage structures. The physical storage structure includes data files, control files containing metadata about the database, and online log files that redo the document changes to data. Logical storage structure consisting of data blocks; range, which group together contiguous data blocks; segments, which are sets of ranges; and tablespaces, which act as logical containers for shards.
- An Oracle database instance is built around a set of storage, called the system global area (SGA), that contains pools of shared memory; an instance also includes processes running in the background that manage I/O functions and monitor database operations to optimize performance and reliability.
- Separate client processes run application code for users connected to an instance, while server processes manage interactions between client processes and the database. Each server process is assigned a separate area of memory called the program global area, separate from the SGA.
Origins and current versions of Oracle
- Longtime CEO Larry Ellison and associates Bob Miner and Ed Oates founded the company that eventually became Oracle Corp in 1977, initially as a consulting services company called Development Labs software development (SDL). Starting with a $2,000 investment, they set out to demonstrate that relational databases, then a fledgling technology developed only in prototype form at IBM, could be commercially viable. commercial.
- SDL named its Oracle RDBMS, originally without a Database, after a project where the three founders worked for the CIA. In 1978, SDL created an early version of the software that was never released as a product. Oracle version 2 followed the following year, becoming the first relational database on the market. The company changed its name to Relational Software Inc. At that point, in 1982, it became Oracle Systems Corp, which was shortened to Oracle Corp in 1995.
- As of mid-2017, Oracle has released 11 major updates to the RDBMS since Version 2, culminating in Oracle Database 12c, released in 2013 and enhanced in Version 2 release. Launched in September 2016.
- The first 12c release added a multi-tenant architecture that allowed users to configure a large number of databases to operate in a single container database and then manage them as one. data at the container level. Oracle’s high-cost Multitenant technology is designed to streamline upgrades, backups, and other administrative tasks on pluggable databases, as Oracle calls them.
- Oracle Database 12c also includes native support for JSON documents and introduces Oracle Database In-Memory, an in-memory processing engine sold as an optional add-on. In addition, Oracle touted 12c as designed for cloud computing, and then made Release 2 available in the cloud only at first, before opening it up for on-premises use in March 2017.
- Oracle Database 12c Release 2 adds support for sharding large databases into horizontal partitions with their own servers and storage resources; it also increases the performance of Oracle Database Memory and extends the features of Oracle Multitenant.
- In August 2017, Oracle revealed plans to move to an annual release schedule on the database software, with the last two digits of the year used as the version number of the respective release. That approach is because starting in 2018, the company will jump in numbering from 12c to Oracle Database 18, followed by Oracle Database 19, and more.
- No “dot” releases are scheduled during the revised release cycle, but Oracle says software patches and bug fixes will be released quarterly in two forms: releasing resolution updates. resolve known issues in the database and release an update revision that fixes the problem later in updates.
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Oracle Database Version
- Oracle Database is available for licensing in four separate editions that provide different levels of functionality and scalability. Oracle Database Enterprise Edition includes all the features of the software and is designed for use by large organizations running high-volume transaction processing, data warehousing, analytics, and internet applications. The Standard Edition offers a more limited feature set for team and departmental applications; there are three versions of it, including Standard Edition 2 which was available with later releases of Oracle Database 12c.
- In addition to the usual stand-alone licensing for on-premises deployment, Oracle Database Enterprise Edition can be licensed for deployment on the Exadata Database Machine, a bundled appliance optimized for database software as a part of Oracle’s line of engineered systems products.
- The Enterprise Edition can also be licensed in three different permutations with different features as part of the Oracle Database Cloud Service, plus a fourth configuration for the cloud instance of Exadata. Standard Edition 2 is also available for licensing as part of the Oracle Database Cloud Service.
- Oracle also offers Oracle Database Personal Edition for on-premises use.
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Key database features and options
- Oracle Database includes a long list of standard features, additional options, and management packages in various functional categories, including high availability, scalability, performance, security and analytics.
- In addition to Oracle Multitenant, Oracle Database In-Memory, and RAC, several notable additional cost items available as part of the Enterprise Edition include modules for automated workload management, management database lifecycle, performance tuning, online analytical processing (OLAP), partitioning, data compression, and spatial and graph data management.
- Oracle Advanced Analytics options support SQL queries in the database and open source R algorithms for a broader range of analytical processing. High availability functions include application continuity and automated block repair tools, plus Data Guard and Active Data Guard, which provide a set of services for creating backup databases to provision disaster recovery capabilities and protection against data corruption.
- Data stored in Oracle Database can be encrypted for data security, and both the Standard and Enterprise editions support network encryption and strong authentication. More security features are available as extras in the Enterprise Edition.
- Oracle masking and data wrapping allows data to be further encrypted or masked when used for development and testing, and Oracle Label Security helps database administrators (DBAs) set boundaries who can see what data. It allows granular access control by specifying a taxonomy or label for each row of data and then allows users to view only rows that match their label authorization.
- Oracle Database Enterprise Edition also has built-in security features to help DBAs determine who can access the data in the first place, such as the Oracle Database Vault, which prevents users from accessing data they don’t have privileges in. let’s see,….
- Oracle is an industry leader in relational databases. They help businesses store, update, change, and manage data. Applications that can be purchased with the Oracle database are flexible and powerful and meet the needs of many different types of businesses. So what is Oracle? Did you understand?
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