.IDB File Extension

Intermediate file created by a Visual Studio program, such as Visual C++, during the debugging process; saves the compiler's state and is used for minimal program rebuilds and incremental compilations.

File created by IDA (The Interactive Disassembler), a program that disassembles executable files (.EXE) into low-level assembly language code; stores the disassembled data in a compressed format; used in the process of exploring executables, often for revealing potential security threats or exploitation routes.

When an IDB file is opened in IDA, the data is decompressed into a collection of files. After the database is closed, the files are then compressed back into the IDB file. This enables faster performance while the database is open and lower disk usage when closed.