change data capture

Change data capture (CDC) is a technique used in databases to capture and track changes made to data in real-time. CDC is used to identify and record changes to data in a database, including insertions, updates, and deletions. This information can then be used to keep other systems and applications synchronized with the changes made in the database. CDC is especially useful in cases where multiple systems need to access the same data, as it ensures that all systems are working with the most up-to-date data. CDC can be implemented in various ways, including using triggers, log-based replication, and other techniques.

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Change Data Capture

Change Data Capture (CDC) is a technique used in databases to capture and track changes made to data in real-time. It involves identifying changes made to data in a database and then recording those changes in a separate system or log. This allows applications to access the most up-to-date data without having to query the entire database for changes. CDC can be used for a variety of purposes such as auditing, replication, and data warehousing. It is often used in conjunction with other technologies such as ETL (Extract, Transform, Load) and data integration tools.

cadence 中orcad capture cis

在配置Cadence OrCad Capture CIS软件时，需要进行以下步骤：
1. 打开Cadence的安装目录，找到并打开"Capture.ini"文件。
2. 在文件中找到"Type=Allegro"行的下方，添加以下字段内容：
\[Allegro Footprints\]
Dir0=D:\Process\capture_dbc\pcb_lib
\[Part Library Directories\]
Dir0=D:\Process\capture_dbc\capture_lib
\[CIS Browse Directories\]
Dir0=D:\Process\capture_dbc\datasheet
这些字段分别指定了PCB封装库、元件symbol part库和datasheet检索库的位置，这些文件都应该存放在数据库目录下。\[1\]
3. 在配置过程中需要注意几个问题：
- Excel表格中的datasheet名称可以是PDF文件，也可以是一个文件夹的名称。如果有多个数据手册，可以将它们放在同一个文件夹中，在Excel表格中只需要填写文件夹名称即可进行检索。
- 在Excel表格中配置Schematic Part时，格式为"原理图符号库名称\原理图符号名称"。
- 在启动Capture之前，确保datasheet的路径、原理图符号库的路径以及PCB封装的路径都已记录在capture.ini文件中，这一点非常重要。\[2\]
4. 配置前需要重新运行Capture CIS软件，按照以下步骤进行操作：
- 确认Capture软件为"OrCAD Capture CIS"，如果不是，可以通过"File→Change Product…"进行更改。
- 执行"File→New→Design"新建一个DSN文件。
- 执行"Option→CIS Configuration…"打开数据库配置窗口。
- 单击"New…"，然后按照提示进行配置，包括选择数据库源、关联元件类目、配置Part Number和Value等。
- 最后确认配置无误后点击"确定"。\[3\]

希望以上信息对您有所帮助。
#### 引用[.reference_title]
- *1* *2* *3* [Cadence Orcad Capture CIS 原理图库数据库管理搭建方法图文教程](https://blog.csdn.net/fydar/article/details/122992201)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v91^control_2,239^v3^insert_chatgpt"}} ] [.reference_item]
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