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In computing, a connection string is a string that specifies information about a data source and the means of connecting to it. It is passed in code to an underlying driver or provider in order to initiate the connection. Whilst commonly used for a database connection, the data source could also be a spreadsheet or text file.
An application failure occurs when the connection pool overflows. This can occur if all of the connections in the pool are in use when an application requests a connection. For example, the application may use a connection for too long when too many clients attempt to access the web site or one or more operations are blocked or simply inefficient.
Zen supports stand-alone, client-server, peer-to-peer [7] and software-as-a-service (SaaS) [8] architecture. The central architecture of Zen consists of two database engines: (1) the storage engine, known as MicroKernel Database Engine (MKDE) and described as a transactional database engine, and (2) the relational database engine, known as SQL Relational Database Engine (SRDE).
PostgreSQL (/ ˌ p oʊ s t ɡ r ɛ s k j u ˈ ɛ l / POHST-gres-kew-EL) [11] [12] also known as Postgres, is a free and open-source relational database management system (RDBMS) emphasizing extensibility and SQL compliance.
Major DBMSs, including SQLite, [5] MySQL, [6] Oracle, [7] IBM Db2, [8] Microsoft SQL Server [9] and PostgreSQL [10] support prepared statements. Prepared statements are normally executed through a non-SQL binary protocol for efficiency and protection from SQL injection, but with some DBMSs such as MySQL prepared statements are also available using a SQL syntax for debugging purposes.
PSQL can refer to: Pervasive PSQL , a proprietary DBMS optimized for embedding in applications psql (PostgreSQL) , an interactive terminal-based front-end to PostgreSQL
Pervasive PSQL, also known as Pervasive.PSQL or simply PSQL (originally Btrieve) is a DBMS for embedded applications. There were four editions of Pervasive PSQL: [26] PSQL Client, PSQL Workgroup, PSQL Server, and PSQL Vx Server. PSQL Client is designed for use with PSQL Server and PSQL Vx Server in a client-server network. [citation needed]
Reserved words in SQL and related products In SQL:2023 [3] In IBM Db2 13 [4] In Mimer SQL 11.0 [5] In MySQL 8.0 [6] In Oracle Database 23c [7] In PostgreSQL 16 [1] In Microsoft SQL Server 2022 [2]