Persistence

lastmod 2019-02-19created 2015-11-186 edits

Category

• Object relational mapping (ORM)
• Data access object (DAO)
• Database abstraction layer (DBAL)

SQL Mapper

• Maps Java objects to actual SQL statements. (Removes SQL-related parts from Java code)
• SQL statements are not generated automatically; the developer writes them
• The mapping itself is independent of the database's entities and relationships. (The mapping itself is limited to SQL statements)
• In practice, every embedded SQL system can be considered an SQL mapper
• In the case of iBatis sql map, SQL embedded in XML (SQL in Java code is separated into XML files)

SQL Mapper Libraries

• iBATIS SQL Maps
• Oracle SQLJ
• Forte 4GL Embedded SQL
• Pro*C Embedded SQL

ORM of Android

• NAVER D2 - ORM of Android ¹
• aBatis
• ActiveAndroid
• Android-Active-Record
• greenDAO
• ORMLite
• stORM

Favorite site

• Description of Persistent
• Description of persistence

References