An archive named typically refers to a compressed folder containing a Minecraft Bedrock Edition world. The "DB" in the name likely indicates the presence of the db (database) folder, which is the primary storage for world data in Bedrock Edition. File Significance
: The thumbnail image displayed in the Minecraft world selection menu. DB MC.rar
: A text file often found in Bedrock world directories. How to Use the File An archive named typically refers to a compressed
: Double-click the new .mcworld file to launch Minecraft and automatically import the world. DB MC.rar