Which conflict occurs when two clients try to write the same data at the same time?

Which conflict occurs when two clients try to write the same data at the same time?

concurrency control conflict
there will be occasions where two users will both read the same data into memory. User 1 will update the data and write those changes back to the database before user 2 does the same thing. Now you have a concurrency control conflict because user 1 read the data before user 2 wrote it back to the database.

Does HDFS allow a client to read a file which is already opened for writing?

Does HDFS allow a client to read a file which is already opened for writing? Yes, one can read the file which is already opened.

Can a multiple user update the same table?

Update the same table (adding/editing) and updating different tables in the database. They can all access the database at the same time but can not update it. I know it can be a problem with editing the same table but is it a way where if they are all adding to the database it will update?

Can a database be updated by two people at the same time?

There are ways, but you need to consider carefully what simoutaneous updating you wish to do. For example if you have a database of names and addresses and two people wish to update it at same time, then if they wish to update different records, no problem should occur.

How many users can edit the same list together?

How many users can edit the same list together? We are using SharePoint 2013 on-premise. We are planning to collect all staffs’ (over 5000) information using a list. The list contains several columns with first column is the staff ID.

Is there a way to allow multiple users to update the MS Access database?

We have a MS Access database located on a shared drive. Is there a way I can allow multiple users to access and update the database at the same time? There are ways, but you need to consider carefully what simoutaneous updating you wish to do.