公开(公告)号：US5930806A

公开(公告)日：1999-07-27

申请号：US985080

申请日：1997-12-04

申请人： Kazuki Taira ,  Jyunichi Kamakura ,  Takashi Hosoya ,  Hiroshi Suzuki ,  Tadahiro Haraguchi ,  Yoshinobu Sasakawa ,  Hisayuki Enbutsu

发明人： Kazuki Taira ,  Jyunichi Kamakura ,  Takashi Hosoya ,  Hiroshi Suzuki ,  Tadahiro Haraguchi ,  Yoshinobu Sasakawa ,  Hisayuki Enbutsu

IPC分类号： G06F12/00 ,  G06F17/30

CPC分类号： G06F17/303 ,  Y10S707/99953 ,  Y10S707/99955

摘要： A data migration system that enables a database system to migrate from a network data model to a relational data model in a short development time, without degradation in data integrity. A record migration unit creates target records for the relational data model. The records are arranged in the same way as they originally were in the network data model before data migration has been made. A primary key addition unit then adds a primary key to each of the target records so that they can be uniquely identified. To preserve the original parent-child relationships between records, a relation key addition unit selects each child record from among the target records, identifies the parent of the child record by referring to the pointers added to corresponding source records, and gives a value of the primary key of the parent record to the child record as a relation key thereof. Further, a set sequence key addition unit gives set sequence keys to the child records so that they will represent a sequential order of the source records.

摘要翻译： 数据迁移系统使数据库系统能够在短时间内从网络数据模型迁移到关系数据模型，而不会降低数据完整性。 记录迁移单元创建关系数据模型的目标记录。 在进行数据迁移之前，记录的排列方式与最初在网络数据模型中相同。 主键添加单元然后将主键添加到每个目标记录，使得它们可以被唯一地标识。 为了保留记录之间的原始父子关系，关系密钥相加单元从目标记录中选择每个子记录，通过参考添加到相应源记录的指针来识别子记录的父代，并给出 父记录的主键作为其关键字的子记录。 此外，设置序列密钥附加单元给予子记录的设置序列密钥，使得它们将表示源记录的顺序顺序。

公开(公告)号：US06922825B1

公开(公告)日：2005-07-26

申请号：US09553316

申请日：2000-04-20

申请人： Jyunichi Kamakura ,  Kazuya Baba

发明人： Jyunichi Kamakura ,  Kazuya Baba

IPC分类号： G06F9/06 ,  G06F9/44

CPC分类号： G06F8/36 ,  G06F8/75

摘要： The object of the present invention is to analyze association relationships between data items and processes being used in an existing system. By analyzing a program or the like, the type and numbers of access instructions to data items in each step of the program is examined (step 13). Then, data item association degree is calculated from the type of access instruction etc., and the values of the association degree are corrected using system requirements etc (step 15 and step 17). Processes having high association degrees are collected together by referencing the corrected valves of the association degree (step 21). Based on the groups of collected processes, process division and data item partitioning is performed (step 23). Interfaces between processes are then displayed based on divided processes and partitioned data items (step 25).

摘要翻译： 本发明的目的是分析在现有系统中使用的数据项和进程之间的关联关系。 通过分析程序等，检查程序的每个步骤中对数据项的访问指令的类型和数量（步骤13）。 然后，根据访问指令等的类型计算数据项关联程度，并且使用系统要求等来校正关联程度的值（步骤15和步骤17）。 具有高关联度的处理通过参照关联程度的校正阀而被收集在一起（步骤21）。 基于所收集的进程组，执行进程划分和数据项划分（步骤23）。 然后基于划分的进程和分区数据项显示进程之间的接口（步骤25）。