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MyBatis Migrations is a Java command line tool that keeps track of database schema changes managing DDL files (known as migrations). Migrations allows to query the current status of the database, apply schema changes and also undo them. It also helps to detect and solve concurrent database schema changes made by different developers.
In relational databases, the log trigger or history trigger is a mechanism for automatic recording of information about changes inserting or/and updating or/and deleting rows in a database table. It is a particular technique for change data capturing , and in data warehousing for dealing with slowly changing dimensions .
MyBatis: First class persistence framework with support for custom SQL, stored procedures and advanced mappings. Netty: Netty is a non-blocking I/O (NIO) client-server framework for the development of Java network applications such as protocol servers and clients. Neuroph
For example, assume there is a database table PRODUCT (PROD_ID INTEGER, PROD_DESC VARCHAR(64)) and a Java class com.example.Product (id: int, description: String).To read the product record having the key PROD_ID into a new Product POJO, the following mapping is added into an iBATIS XML mapping file:
A write ahead log is an append-only auxiliary disk-resident structure used for crash and transaction recovery. The changes are first recorded in the log, which must be written to stable storage, before the changes are written to the database. [2] The main functionality of a write-ahead log can be summarized as: [3] Allow the page cache to ...
Log shipping is the process of automating the backup of transaction log files on a primary (production) database server, and then restoring them onto a standby server. This technique is supported by Microsoft SQL Server , [ 1 ] 4D Server , [ 2 ] MySQL , [ 3 ] and PostgreSQL .
Part of the transaction log containing transactions completed by COMMIT or ROLLBACK. Because all relational databases contains, by definition, a transaction log (most of the time based on the [ARIES algorithm [Algorithms for Recovery and Isolation Exploiting Semantics]]), the log, which is a binary file, is divided into three parts, sequentially:
A server log is a log file (or several files) automatically created and maintained by a server consisting of a list of activities it performed. A typical example is a web server log which maintains a history of page requests. The W3C maintains a standard format (the Common Log Format) for web server log files, but other proprietary formats ...