How many applications need to connect to the UltraLite database? The number of concurrent connections affects whether you need the UltraLite in-process runtime or the UltraLite engine. To understand how they differ, see Choosing an UltraLite data management component.

What platform(s) do you want to support? This choice can affect which APIs are available to program your application. See Choosing an UltraLite programming interface.

Which platforms will the database run on? Because file formats have been consolidated, you may be able to create a database that runs on multiple platforms. See Creating and configuring UltraLite databases.