All of your database information will be stored in an Alexandria Support folder located in your operating system's shared application directory, where you'll find the Alexandria database, labeled ALX.db, and supporting files, such as Operation Files (Reports, Exports, etc.). These are located within the Data folder, inside of a sub-directory which name matches the database serial number. Database archives supporting files are located in the Archives folder.
On Windows machines, the shared application folder should be kept here:
Hard Drive (typically C:) \ ProgramData \ Alexandria Support
On Macintosh machines, this folder is located in the following directory:
Hard Drive \ Users \ Shared \ Library \ Application Support \ Alexandria Support