Oracle8i introduces SYS_GUID, which has many advantages over the traditional sequence used by Oracle administrators. A sequence generator simply creates a series of integers starting from a given starting point, and is used to automatically
Generate the guid type in Oracle -- sys_guid () function
Oracle8i introduces sys_guid, which has many advantages over the traditional sequence used by Oracle administrators. A sequence generator simply creates a series of integers starting from a
A Globally Unique Identifier (GUID, Globally Unique IDentifier) is also called a UUID (Universally Unique Identifier ).
GUID is a 128-bit numeric identifier generated by an
Service, distributed has become the first choice for system development, high concurrency operation in the data storage, need a set of ID generator services to ensure the distribution of global uniqueness, to ensure that the system's order creation,
ID generator visible code not available within hibernate
1 can be used at the same time for different databases
@Id @GeneratedValue(strategy = GenerationType.AUTO)
2 for MySQL
Uses a GUID generated by a database of type string.
guid:globally Unique Identifier, a globally unique identifier, also known as a UUID, is a 128-bit long number, expressed as a 16 binary. The core idea of the algorithm is to combine the machine's
Generator of Hibernate ID
Self-adding sequence, maintained by Hibernate. The initial value is 1, and only int long and short are supported. It is not suitable for multithreading concurrent update database, suitable for single process
This is Part 1 in a series of blog post on the SharePoint solution generator.
In hibernate, the optional sub-element under the label is the name of a Java class, which is used to generate a unique identifier for the persistence class instance. All
net Layered Schema builder
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There are many Object relational mapping (ORM) and Code generation programs (generator), such as (nhibernate,nettiers,entity framework, etc.), some of
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