Beginning Relational Data Modeling 2nd Edition
Data modeling is a skill set that has a long history and yet is often not immediately recognized in the IT world. Although jobs for programmers and database administrators are regularly advertised, few companies employ people in a role titled data modeler. However, data design, which is an awareness...
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| Những tác giả chính: | , |
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| Định dạng: | Sách |
| Ngôn ngữ: | English |
| Được phát hành: |
Apress
2012
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| Những chủ đề: | |
| Truy cập trực tuyến: | http://scholar.dlu.edu.vn/thuvienso/handle/DLU123456789/30813 |
| Các nhãn: |
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| Thư viện lưu trữ: | Thư viện Trường Đại học Đà Lạt |
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| Tóm tắt: | Data modeling is a skill set that has a long history and yet is often not immediately recognized in the IT world. Although jobs for programmers and database administrators are regularly advertised, few companies employ people in a role titled data modeler. However, data design, which is an awareness of how data behaves and what it means within an organization, is supremely important in ensuring that company data systems work efficiently. It’s often only when systems start misbehaving, or can’t cope with the data in a way that the clients want it to, that poor database design and incomplete data understanding is exposed. How many times have you tried to cancel a gas or electric utility account only to find that the phone operators can’t erase your records because of constraints in their data system? Instead of modifying or removing your details, you’re forced to set up another account. This is not only time consuming but also a poor use of existing data. Accurate data modeling and subsequent database design can minimize these problems and ensure that each system is truly tailored to the needs of the clients. |
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