What is a WhatsApp MSGstore file?

Can anyone tell me what is the purpose of msgstore files that keep popping up in my storage ? I first thought they were log related but then I haven't taken

Repository files navigation README whatsapp-database-merger A small command-line utility that can be used to merge multiple WhatsApp databases

msgstore files What is a WhatsApp MSGstore file? Msgstore files are the files which keep your messages as a backup

msgstore o que é The msgstore file itself is located in the WhatsApp Databases folder and opening the database of this file can use the SQLite Browser Database application