Table functions return a set of rows using PL/SQL logic, allowing them to be queried like a table/view in SQL, and enable pipelined data processing in ETL. 1. **功能定义**:表函数(Table Functions)是PL/SQL中的一种函数类型,其核心目的是通过编程逻辑动态生成数据集,并以行集合的形式返回结果。
However, still an open issue is how to handle IE quality, which is a part of ETL like process for the BI. Precision of IE is still too low for BI and, according to Sunita Sarawagi in recent survey on IE, we are still far from a comprehensive quality model for IE. Currently the ...
What is the importance of middlemen in business? What do you understand by the term "organization of data"? Is bitcoin a currency or commodity? Explain. In business, what does merchant mean? What is ETL and why is it necessary. What is the meaning of immersive multimedia in business? What...
to organisms that we see today. This remained speculation as there had been no experimental evidence to support this. Eventually, in the 1950s, a team of biologists, Stanley Miller and his professor Harold Urey, devised an experiment to test the generation of biological molecule...
The addition of a nonlinear loss term to the classic Lotka-Volterra equations used for describing the predator-prey problem in ecology not only stabilises the oscillations in the solutions for the populations of electrons and particles in the plasma but also explains the behaviour in more detail. ...
it's also called as a heart of ETL engine because it's the tool ehich move the data from sources to target3) Repository service: The repository service manages connectivity between repository and client application tools. The repository service is a multi threaded process, it inserts,updates,...
Explain the advantages and disadvantages of implementing portfolio insurance using stock and puts in comparison to using stock and futures in a dynamic hedge strategy? What are the benefits of insurance to individuals and to society? What are the pros and cons of VaR versus ETL for financial ...
Explain, in detail, financial risk, with the help of an example. What is an assigned risk plan? Explain. What is the risk on different financial assets and what is affecting their risk? Define the following term and identify its role in finance: Risk. Define or describe the following term...
In other words, what are its benefits, and what are the costs that come along with those benefits? Financial Leverage: Financial leverage is the process of using debt for the purchase of additional assets to increase return...
Rhythm is a word used to describe the patterns of music in time. While rhythm can exist without melody, melody, on the other hand, cannot exist without rhythm. A good example of rhythm is how an individual's voice falls and rises as they talk....