This paper summaries the structure of VSAM file, and the data space, catalog, protection of data and functions of VSAM.

The Optimization of VSAM File Performance

VSAM文件的性能优化

VSAM is a kind of file which use the virtual storage access method, it belongs the second phase of the development of data management technology.

利用此技术的数据文件称为VSAM文件，它属于数据管理技术发展的第二个阶段&文件系统。

VSAM supports batch users, online transactions, and data base applications.

VSAM可用于成批处理，联机操作及数据库环境。网络交易的形式多种多样，网络交易平台起着联系销售者和消费者的桥梁作用。

To solve the efficiency problem of current mainframe systems, we present an approach for improving VSAM file access speed.

文章针对当前主机系统所面临的效率问题，提出减小CA分裂次数，加快VSAM文件访问速度的有效方法，以此来提高系统运行效率。

The next step is to write a sample COBOL CICS program to read a record from VSAM dataset based on a record key.

下一步是编写一个COBOL CICS程序，以便基于记录键（record key）从VSAM数据集中读取一个记录。

Use the IDCAMS utility to create a VSAM KSDS cluster, data, and index datasets.

使用IDCAMS实用工具创建一个VSAM KSDS集群、数据和索引数据集。

The seismic characteristics and dynamic stability of slope can be well simulated with VSAM, so as to provide a practical approach for dynamic stability analysis of slope.

矢量和法能够较真实地模拟边坡在地震动过程中的动力特征和稳定性状态，为边坡动力稳定性分析提供一种切实可行的分析途径。

Sean Conroe created a website to get volunteers and s.

Sean Conroe创建了一个网站，招募志愿者和捐赠。

SEAN CONROE: "We have spinach, onions, radish, lettuce and chard that's all ready to be harvested right now."

SEAN CONROE：“我们种植了菠菜，洋葱，萝卜，莴苣和甜菜。现在正准备收获。”

Sean Conroe and Amber Banks wanted to start a farm in the middle of Seattle, Washington.

现在，他们希望那个在华盛顿西雅图市中心开辟农田。

Sean Conroe says Alleycat Acres is expanding to other empty areas of Seattle.

Sean Conroe表示，Alleycat Acres项目现在已经扩展到西雅图的其他空地。

Sean Conroe created a website to get volunteers and donations.

肖恩创建了一个网站接受捐赠和招募志愿者。

Sean Conroe is a college student.

Sean Conroe是一名大学生。

SEAN CONROE: "Broccoli, tomatillos and cucumbers which are all starting to. And then strawberries."

SEAN CONROE：“花椰菜，粘果酸浆和黄瓜也开始发芽。然后还有草莓。”

Fox Entertainment and Nigel Lythgoe owe Misha, Mitchel and the whole LGBT community an apology.

福克斯娱乐和奈杰尔欠米莎，米切尔和整个LGBT社团一个道歉。

All went well until I got to one table where little Misha sat.

所有事情进行顺利，直到我来到米亚坐的桌子。

Misha also appeared on a stamp.

米沙还出现在邮票。

So we give our actor, Rachel and Misha a scenario straight from the pages of the tiger mother book, and A-is a bad grade.

所以我们请演员瑞秋与米莎饰演一出跟蔡美儿的书里一样的情节。对于虎妈来说，A-是很糟的分数。

Misha Defonseca acknowledged her bestselling Holocaust story as a fake after a genealogist outed her. MishaDefonseca

在当一位系谱学者揭露她之后承认自己关于二战犹太大屠杀的畅销书是捏造的。

The anthropological turn from David Bloor to Bronu Latour has its great significance.

从布鲁尔到拉图尔所体现出的科学知识社会学的人类学转向，具有重要意义。