Top "Uniqueidentifier" questions

With reference to a given (possibly implicit) set of objects, a unique identifier is any identifier which is guaranteed to be unique among all identifiers used for those objects and for a specific purpose.

Safe to use System.currentTimeMillis() to generate a unique database ID?

I'm using System.currentTimeMillis() (which returns a long integer) in Java to generate a unique ID for database entities since …

java time uniqueidentifier
hibernate generator won't insert with uniqueidentifier

I'm trying to map an entity using Hibernate Annotations, so that when a record is created and saved (via cascade), …

java hibernate orm uniqueidentifier sql-server-2008-express
Is it possible to get a truly unique id for a particular JVM instance?

I need a way to uniquely and permanently identify an instance of the JVM from within Java code running in …

java jvm uniqueidentifier
Why asp.net Identity user id is string?

I want to use System.Guid type as an id for all of my tables in asp.net web api …

c# asp.net database-design uniqueidentifier asp.net-identity-2