In DB2, performance optimization is targeted to large databases, such as SAP Business Information Warehouse (BIW), while SQL optimization aims to improve query times.
在DB 2中，性能优化主要针对大型数据库，如SAP Business Information Warehouse (BIW)；而SQL优化的目标则是为了缩短查询时间。
2
Dispersing the whole BIW with 3d shell elements of 3 or 4 nodes created the fine FEM model.
采用3节点或4节点空间板壳单元离散整个白车身，建立了细化力学模型。
3
An optimization model for the body-in-white (BIW) of a commercial vehicle cab is set up with natural frequency as constraint and minimizing the volume of welding spots as the objective.