Build connection strings for PostgreSQL, MySQL, MongoDB, Redis, and SQL Server with parameter options.
Database Connection String Builder turns separate host, port, database, credential, and option values into a connection string for PostgreSQL, MySQL, MongoDB, Redis, or SQL Server. Selecting the database determines the connection-string grammar and which parameters belong in the result. The main surprise is that connection strings are not interchangeable across database clients: a valid-looking URL or property list may still use option names or escaping rules that a particular driver does not accept.
The selected database controls how the supplied server, authentication, database, and optional settings are arranged. PostgreSQL, MySQL, MongoDB, and Redis commonly use URL-shaped connection strings, while SQL Server clients commonly accept named properties separated by semicolons. The resulting text follows the selected database family rather than applying one generic format to every engine.
Optional settings are added using the convention appropriate to the chosen connection-string form, such as query parameters or named properties. In URL-shaped strings, reserved characters inside usernames, passwords, database names, or parameter values may require percent-encoding. The builder produces connection text; it does not establish a session or prove that the server accepts the selected options.
No. The database choice determines the general format, but individual drivers may require a particular URL scheme, property spelling, prefix, or supported option set. For example, SQL Server connection strings vary among ADO.NET, ODBC, and JDBC consumers. Check the receiving driver's connection-string documentation before treating the result as portable.
No. It constructs the connection string in the browser and does not open a database connection or upload the entered values. Successful generation therefore says nothing about whether the credentials work. Test the result through the intended database client, while handling it as a secret if it includes a password or token.
The behavioral notes were checked against the browser implementation. Standards and primary references below define the relevant format, formula, or platform behavior.
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