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Lazarus Mssql Dblib Dll Download


Lazarus Mssql Dblib Dll Download




Lazarus is a free and open source cross-platform IDE for Pascal and Object Pascal programming languages. It provides a graphical user interface (GUI) designer, a code editor, a debugger, and many other features to help developers create applications for various platforms, such as Windows, Linux, macOS, iOS, Android, and more.


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One of the features of Lazarus is the ability to connect to various databases using the SQLdb framework. SQLdb is a set of components that provide a unified interface to access different database servers, such as MySQL, PostgreSQL, SQLite, Firebird, Oracle, MSSQL, and Sybase.


To connect to MSSQL or Sybase databases, Lazarus uses the mssqlconn unit, which relies on the FreeTDS library. FreeTDS is an open source implementation of the Tabular Data Stream (TDS) protocol, which is used by MSSQL and Sybase servers to communicate with clients. FreeTDS provides a low-level library called dblib, which is used by the mssqlconn unit to establish and manage connections, execute queries, and retrieve results.


How to install FreeTDS library for Lazarus?




To use the mssqlconn unit in Lazarus, you need to have the FreeTDS library installed on your system. Depending on your platform and architecture, you may need to download different versions of the library.


  • On Linux, you can install the freetds package using your package manager. For example, on Debian-based systems, you can use the command sudo apt install libsybdb5. This will install the libsybdb.so file in your system library directory. You may also need to create a symbolic link from libsybdb.so to libsybdb.so.5 in the same directory.



  • On Windows, you can download a pre-compiled DLL file from the Free Pascal website: [32-bit version] or [64-bit version]. You need to copy the dblib.dll file to your application directory or to your system directory (e.g. C:\Windows\System32).



  • On macOS, you can download a pre-compiled dylib file from the FreeTDS website: [32-bit version] or [64-bit version]. You need to copy the libsybdb.dylib file to your application directory or to your system library directory (e.g. /usr/local/lib).



How to use mssqlconn unit in Lazarus?




Once you have installed the FreeTDS library on your system, you can use the mssqlconn unit in Lazarus to connect to MSSQL or Sybase databases. You need to add the mssqlconn unit to the uses clause of your program or unit. Then you can use the TMSSQLConnection or TSybaseConnection components to configure and establish connections.


The TMSSQLConnection and TSybaseConnection components have several properties that you can set to specify the connection parameters. The most important ones are:


  • DatabaseName: The name of the database you want to connect to.



  • HostName: The name or IP address of the server where the database is located.



  • Password: The password for the user account that has access to the database.



  • UserName: The user name for the user account that has access to the database.



You can also set other properties, such as Port (the port number of the server), LoginPrompt (whether to show a dialog box for entering credentials), CharSet (the character set of the database), and Params (a list of additional connection parameters).