hello! I have a two question about database-viewer.
1. I saved the .db through the bag and ran the database-viewer to work as shown in the figure below.
![](http://official-rtab-map-forum.206.s1.nabble.com/file/n9367/Screenshot_from_2023-03-14_03-30-00.png)
This is the original picture, but I made it like that by deleting and adding mismatched images one by one through the constraints view. I was wondering if there is any way to make this more convenient.
![](http://official-rtab-map-forum.206.s1.nabble.com/file/n9367/rtabmap_1_%EC%88%98%EC%A0%95%EC%A0%84.png)
2. I tried to merge the modified .db with another .db like in #1, but the merged graph came out as the original .db instead of the .db that I modified. Attached a picture for better understanding.
![](http://official-rtab-map-forum.206.s1.nabble.com/file/n9367/Screenshot_from_2023-03-14_03-47-17.png)
How can I merge the .db I modified with another .db?
please answer about my question.