6/7/2023 0 Comments Cab file extractorSoftware developers using WI actually create their own installation files. Installer installation files, is so complex,Ĭonvoluted and poorly designed, with data so heavily cross-referenced - and the available tools are so limited - that few The structure of MSI databases, when they are used as Windows It uses an MSI database that contains approximately 80 tables, with extensive cross-referencingīetween the various columns of those tables. Unfortunately, the Windows Installer system is extremely - even bizarrely - complex. The software install settings and usually contains the software itself, packed inside the MSI. Windows Installer (WI) refers to using MSI database files as the "housing" for a software installation.Īn MSI file used to install software through WI contains Subset of SQL, have sometimes been referred to as "WQL" or Windows Query Language.) Offering an extensive set of functions for accessing and manipulating an MSI database. But the functions available for working with MSIs present it as a simple SQL database.Ī scriptable object provided by msiexec.exe (the WindowsInstaller.Installer object) is basically a simple SQL "engine", Technically it's a Compound Storage File, In a file with the extension ".msi".(Sometimes the MSI file is packaged inside an EXE file.)įor the purposes of this webpage, Windows Installer and MSI are defined separately, with MSIīeing the database and object model, while "Windows Installer" refers only to Microsoft's use of MSI filesĪn MSI file is actually an SQL database, for all practical purposes. Software installed by Windows Installer comes packaged MSI is a way to install Windows software.Ī few years ago Microsoft developed a new system for installing software onto Windows.
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