Search results
Results from the WOW.Com Content Network
The SQL specification defines what an "SQL schema" is; however, databases implement it differently. To compound this confusion the functionality can overlap with that of a parent database. An SQL schema is simply a namespace within a database; things within this namespace are addressed using the member operator dot ".". This seems to be a ...
GIS for public utilities; can be stored inside Oracle Database WakandaDB 4th Dimension: AGPLv3 or proprietary Windows, Linux, macOS Based on REST and server-side JavaScript XDB Enterprise Server: Micro Focus: Proprietary DOS, Windows NT, OS/2 YugabyteDB: Yugabyte: Apache 2.0 Linux Zope Object Database: Zope Corporation Zope Public License ...
A distributed SQL database is a single relational database which replicates data across multiple servers. Distributed SQL databases are strongly consistent and most support consistency across racks, data centers, and wide area networks including cloud availability zones and cloud geographic zones .
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 ).
8.14 [9] PostgreSQL License: Yes Yes Yes Yes C++: phpLiteAdmin: Dane Iracleous, Christopher Kramer, others 2019-09-05 1.9.8.2 [10] GPL: Yes Yes Yes No No No No No No Yes PHP: phpMyAdmin: phpMyAdmin Development Team 2025-01-21; 14 days ago. 5.2.2 [11] GPL: Yes Yes Yes Yes Drizzle, MariaDB: php: SQL Database Studio: Jan Prochazka 2016-05-27 3.4.1 ...
This is a comparison between notable database engines for the MySQL database management system (DBMS). A database engine (or "storage engine") is the underlying software component that a DBMS uses to create, read, update and delete (CRUD) data from a database.
Conjunctive queries without distinguished variables are called boolean conjunctive queries.Conjunctive queries where all variables are distinguished (and no variables are bound) are called equi-join queries, [1] because they are the equivalent, in the relational calculus, of the equi-join queries in the relational algebra (when selecting all columns of the result).
SQL was initially developed at IBM by Donald D. Chamberlin and Raymond F. Boyce after learning about the relational model from Edgar F. Codd [12] in the early 1970s. [13] This version, initially called SEQUEL (Structured English Query Language), was designed to manipulate and retrieve data stored in IBM's original quasirelational database management system, System R, which a group at IBM San ...