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基于MS SQL Server的索引研究与应用 被引量:1
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作者 罗彬 《大连民族学院学报》 CAS 2001年第3期21-26,30,共7页
详细描述了索引的概念、优缺点,重点介绍了4种索引的特征与注意事项、索引的创建原则、语法及重要选项说明,并对索引的性能优化进行了全面的阐述,最后介绍了索引调整向导以及全文索引.这对深入地认识、理解和使用索引有一定的理论价... 详细描述了索引的概念、优缺点,重点介绍了4种索引的特征与注意事项、索引的创建原则、语法及重要选项说明,并对索引的性能优化进行了全面的阐述,最后介绍了索引调整向导以及全文索引.这对深入地认识、理解和使用索引有一定的理论价值和实践意义. 展开更多
关键词 MS SQL SERVER 全文索引 数据访问 创建原则 创建语法 数据库 性能优化
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Automated Design and Visualization System of a House Foundation from Blocks
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作者 Algirdas Sokas 《Journal of Civil Engineering and Architecture》 2010年第9期26-31,共6页
This article analyzes creation methods of automated design system, presents design system of a house foundation from blocks. The creation methods of automated design system of a house foundation from blocks are discov... This article analyzes creation methods of automated design system, presents design system of a house foundation from blocks. The creation methods of automated design system of a house foundation from blocks are discovered with Unified Modeling Language. Analyzed objects-classes: block, specification, model. Graphical system can design foundation, form specification of objects and create 3D model of house foundation. There are several types and different dimensions of concrete blocks. The program optimally arranges selected blocks so that monolithic parts will be minimal volume. Program selects a house foundation blocks from database by using ActiveX Data Objects technology, which by programming method connects drawing and database. Drawing's graphical objects have additional data from which exchange of data between graphical system and database is executed. Visualization system and example of house foundation from blocks project with specifications is presented. Creation problems of automated design system are discussed and conclusions are made. 展开更多
关键词 Object-oriented programming house foundation design Unified Modeling Language visualization system.
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