Data is stored in the database. In order to speed up business access, we put some data in the database in the cache. Then the question is, how to ensure the consistency of the data in the db and th
Tag: DB
Performance – Open multiple SQLite database instances on different threads (QT)
Is there any problem with using multiple open connections from different threads at the same time?
From what I have seen it is thread-safe by default, but, could this hurt performance rather
How do we know the lock state of SQLite DB?
1) Is there a pragma or any way to understand the current lock state of sqlite db?
2) In addition, is there a way to know if other processes are using the database? About #1: No, because the an
Package SQLITE DB with my app
I created a SQLite database on my computer. I have imported it into the assets folder in the project directory. How can I access it from my Android application? Use Java I/O to copy it to the da
Local SQLITE DB Android Content Provider: Why?
I am new to Android development, but I can’t revolve around the content provider, especially the benefits of creating one (if any) for a single application, single database SQLite data source. I ca
PostgreSQL – PGADMIN 4 (or DB VisualiSer) Entity Relationship
How to use pgAdmin v4 or DB Visualizer or any other open source tools to make entity relationship diagrams?
PG Administrator
pgadmin III has many interpreters, but they suggest that there sho
Why is the key value to NOSQL DB faster than a traditional relational database
I have suggested that I investigate the Key/Value data system to replace the relational database I have been using.
What I don’t know much about is how to improve query efficiency. From my un
Can I build complex queries for NOSQL DB?
I have been studying noSQL DB, and I have not been able to answer myself satisfactorily: Can complex queries be constructed on noSQL DB?
The type of query I want to know will be like this:
.NET – Recommend a good DB4O viewer
I’m playing db4o, I have Visual Studio Object Manager viewer. It seems okay, but it doesn’t fully conform to tools such as HeidiSQL/SQL Studio/etc, let alone it locks up db4o file – I cannot use my