In database theory, a view is a virtual table or a **logical table ** which based on the result-set of an SQL statement. A view contains rows and columns, just like a real table. The fields in a view are fields from one or more real tables in the database, the below figure show database view field
C1 come from real table
C5, C6 come from real table
C8 come from real table
EclipseLink is fully support JPA 2, this documents use EclipseLink as example, diving into the Process of JPA EntityManager initiation, we mainly focus on the below figure:view more »
This Document Contain a series useful linux commands which used by me every day.view more »
This document describing the Function of DatabasePlatform in EclipseLink.view more »
Hibernate and EclipseLink both fully support JSR-317 (JPA 2.0), Hibernate have the largest community and is widely used/tested, EclipseLink are more light weight and feature at Service Data Objects(SDO) and Object-XML (JAXB), Object-JSON and integration with EIS. Both of them have features for which the other doesn’t have equivalent.view more »
This Document contain a series commands used to administration and use mysql.view more »
InetSocketAddress and InetAddressview more »
JBoss EAP 6/WildFly 以 domain 模式启动时会启动多个 JVM，例如如下通过启动脚本启动 EAP 6.1 domain 模式：view more »
If you need your processed blog post URLs to be something other than the default
/year/month/day/title.html then you can set this variable and it will be used as the final URL.
Jekyll also has built-in support for syntax highlighting of code snippets using either Pygments or Rouge, and including a code snippet in any post is easy. Below contain a list of samples for highlighting code snippets:view more »
This document for how to include a link to a post, the
post_url tag will generate the correct permalink URL for the post you specify.