oltp | 易学教程

How deep to go when denormalising

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问题 I denormalising a OLTP database for use in a DWH. At the moment I am denormalising studygroups. Each studygroup has a key pointing towards 1 project. Each project has a key pointing towards 1 department. Each department has a key pointing towards 1 university. Each universityhas a key pointing to 1 city. Now I know that you are supposed to denormalize the sh*t out your OLTP but in this dwh department will be a dimension on its own. This goes for university also. Would it suffise to add a key

What are OLTP and OLAP. What is the difference between them?

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Actually what do they mean? All articles I find about them don't give me an idea, or my knowledge is too insufficient to understand it. Will some one give me some resources with which I can learn this from scratch. Nagaraj S Here you will find a better solution OLTP vs. OLAP OLTP (On-line Transaction Processing) is involved in the operation of a particular system. OLTP is characterized by a large number of short on-line transactions (INSERT, UPDATE, DELETE). The main emphasis for OLTP systems is put on very fast query processing, maintaining data integrity in multi-access environments and an

What are OLTP and OLAP. What is the difference between them?

阅读更多关于 What are OLTP and OLAP. What is the difference between them?

问题 Actually what do they mean? All articles I find about them don't give me an idea, or my knowledge is too insufficient to understand it. Will some one give me some resources with which I can learn this from scratch. 回答1: Here you will find a better solution OLTP vs. OLAP OLTP (On-line Transaction Processing) is involved in the operation of a particular system. OLTP is characterized by a large number of short on-line transactions (INSERT, UPDATE, DELETE). The main emphasis for OLTP systems is