Is an _id created programatically unique?
10734
Possibility of duplicate Mongo ObjectId's being generated in two different collections?
68690
Creating custom Object ID in MongoDB
7866
How to check if a string is a uniqueidentifier?
28175
How to create id with AUTO_INCREMENT on Oracle?
51360
jQuery clone duplicate IDs
14853
How to get the entity ID for a custom field in Apex?
45745
Difference between id and name attributes in HTML
153452
Get object by id()?
154486
Get insert_id for all rows inserted in single mysqli query (multiple values)
86451
Are usernames required to be unique?
68610
array_unique for objects?
111071
get unique machine id
69797
How do I get the last inserted ID of a MySQL table in PHP?
28090
duplicated id with fragment
146943
PHP/MySQL insert row then get 'id'
116700
Can I or SHOULD I find an object by the object_id attribute in ruby?
71514
Generating a unique machine id