Method of processing data access in a database management system with
data dictionary directory
    3.
    发明授权
    Method of processing data access in a database management system with data dictionary directory 失效
    使用数据字典目录在数据库管理系统中处理数据访问的方法

    公开(公告)号:US4819160A

    公开(公告)日:1989-04-04

    申请号:US004072

    申请日:1987-01-16

    摘要: In a database system having a dictionary/directory for collective management of definition information of the database system, when an application program is compiled to generate an object module, it is confirmed, by referring to the definition information stored in the dictionary, if a database access instruction in the application program is correctly operable. The confirmed definition information is incorporated within an object module which is edited to generate a load module. During execution of the load module, a database access control is effected using the definition information of the database system in the directory as well as the definition information incorporated at the compiling stage.

    摘要翻译: 在具有用于数据库系统的定义信息的集体管理的字典/目录的数据库系统中,当编译应用程序以生成对象模块时,通过参考存储在字典中的定义信息来确认数据库 应用程序中的访问指令正确可操作。 确认的定义信息被并入被编辑以生成加载模块的对象模块内。 在执行加载模块期间,使用目录中的数据库系统的定义信息以及编译阶段中包含的定义信息来实现数据库访问控制。

    Apparatus for vaporization sequence for multiple liquid precursors used in semiconductor thin film applications
    5.
    发明授权
    Apparatus for vaporization sequence for multiple liquid precursors used in semiconductor thin film applications 失效
    用于半导体薄膜应用中的多种液体前体的气化顺序

    公开(公告)号:US06464782B1

    公开(公告)日:2002-10-15

    申请号:US08652194

    申请日:1996-05-23

    IPC分类号: C30B2516

    摘要: A process and apparatus is described for the processing of thin films on semiconductor substrates using one or more liquid precursor sources wherein the liquid precursor source with the highest vapor pressure is first vaporized and then introduced as a vapor into a common manifold connected to a processing chamber, with the point of introduction being spaced away from the processing chamber. A second liquid precursor source, having a vapor pressure lower than the first liquid precursor source, is then introduced in vaporized form into the manifold at a point closer to the processing chamber. This is repeated for each liquid precursor source, with each succeeding liquid precursor source having the next lower vapor pressure being introduced in vaporized form into the manifold at a point closer to the processing chamber than the previous liquid precursor source. A temperature gradient may then be maintained along the manifold with the temperature gradually increased in a direction toward the processing chamber while still mitigating premature boiling of the liquid precursor sources prior to vaporization, or condensation of already vaporized liquid precursor sources or components.

    摘要翻译: 描述了一种用于使用一种或多种液体前体源在半导体衬底上处理薄膜的工艺和装置,其中首先蒸发具有最高蒸气压的液体前体源,然后作为蒸汽引入连接到处理室的公共歧管 导入点与处理室间隔开。 然后,具有低于第一液体前体源的蒸气压的第二液体前驱体源在更靠近处理室的点处以蒸发形式引入歧管。 对于每个液体前体源重复这一操作,其中每个随后的液体前体源具有下一个更低的蒸气压,以比先前的液体前体源更接近处理室的点以蒸发形式引入歧管。 然后可以沿着歧管保持温度梯度,其中温度在朝向处理室的方向上逐渐增加,同时在蒸发之前仍然减轻液体前体源的过早沸腾,或已经蒸发的液体前体源或组分的冷凝。