Related information:
1, data requirement analysis and data mapping design
According to the business requirements and data sources, ETL development should be familiar with the structure and meaning of various data sources, deduce the corresponding data mapping rules and data extraction schemes, and design the process and logic in ETL operation.
2.ETL work development
In ETL development, it is necessary to write the program script of ETL job. According to the data structure and data requirements of the target database, ETL tools, such as InformaticaPowerCenter, ODI and SSIS, are used to extract, clean, process, transform and load the data. Development should ensure the accuracy and consistency of data, and ensure the integrity and availability of data.
3. Data operation and maintenance
ETL development is not only responsible for the development of ETL operations, but also for the operation and maintenance of ETL operations. According to business requirements and data changes, develop and maintain periodic ETL operations, monitor and optimize ETL operations, and ensure that ETL operations have high operating efficiency, excellent data quality and data security.
4. Data warehouse construction and data visualization
ETL developers need to be familiar with the structure and data standards of data warehouse and participate in the construction of data warehouse. ETL developers need to cooperate with data warehouse analysts and data analysts to ensure the quality, availability and reliability of data in the data warehouse.
ETL developers also need to cooperate with data engineers or BI developers to realize data visualization and report presentation according to company requirements.
Generally speaking, ETL post is a key data warehouse development work with strict technical requirements and strong sense of responsibility. You need to have solid programming skills, business analysis skills, data warehouse construction experience and problem-solving skills. At the same time, you need to be proficient in using relevant ETL tools, be able to develop independently and have the spirit of teamwork.