| A database is a program that stores data. |
A database is a program that stores data. |
| There are many types of databases: flat-file, hierarchical, relational, object-relational, object-oriented, xml, and others. |
There are many types of databases: flat file, hierarchical, relational, object-relational, object-oriented, xml and others. |
| The original databases were mainly proprietary and non-standardized. |
The original databases were mainly proprietary and not standardized. |
| Relational databases were the first databases to achieve great success and standardization. |
Relational databases were the first databases to achieve great success and standardization. |
| Relational databases are characterized by the SQL (structured query language) standard to query and modify the database, their client/server architecture, and relational table storage structure. |
Relational databases are characterized by the SQL (structured query language) standard for querying and modifying the database, its client / server architecture and relational table storage structure. |
| Relational databases achieved great success because their standardization allowed many different vendors such as Oracle, IBM, and Sybase to produce interoperable products giving users the flexibility to switch their vendor and avoid vendor lock-in to a proprietary solution. |
Relational databases have been highly successful because their standardization has enabled many different vendors, such as Oracle, IBM and Sybase, to produce interoperable products, giving users the flexibility to switch suppliers and avoid blocking the supplier to a proprietary solution. |
| Their client/server architecture allows the client programming language to be decoupled from the server, allowing the database server to support interface APIs into multiple different programming languages and clients. |
Its client / server architecture allows the client's programming language to be decoupled from the server, allowing the database server to support interface APIs in several different client languages and programming. |
| Although relational databases are relatively old technology, they still dominate the industry. |
Although relational databases are a relatively old technology, they still dominate the industry. |
| There have been many attempts to replace the relational model, first with object-oriented databases, then with object-relational databases, and finally with XML databases, but none of the new database models achieved much success and relational databases remain the overwhelmingly dominant database model. |
There have been many attempts to replace the relational model, first with object-oriented databases, then with object-relational databases, and finally with XML databases, but none of the new database models has been very successful and the relational databases continue to be the predominantly dominant database model. |
| The main relational databases used today are: Oracle, MySQL (Oracle), PostgreSQL, DB2 (IBM), SQL Server (Microsoft). |
The main relational databases used today are: Oracle, MySQL (Oracle), PostgreSQL, DB2 (IBM), SQL Server (Microsoft). |
