current position:Home>What are the data quality assurance principles?
What are the data quality assurance principles?
2022-02-04 17:30:19 【Alibaba cloud Q & A】
What are the data quality assurance principles ?
Take the answer 1:
integrity .
Integrity refers to whether data records and information are complete , Is there a missing situation . Data loss mainly includes the loss of records and the loss of information of a field in the records , Both will cause inaccurate statistical results , so to speak , Integrity is the most basic guarantee of data quality . For example, there is a relatively stable amount of business data every day 100 Ten thousand records , A sudden drop one day 1 Ten thousand , Then maybe the record is missing . For a field in the record, the information is missing , For example, the score of an examination paper in the score table of a college entrance examination should correspond to an admission card number , The number of null values in this field should be 0, Once greater than 0, This means that the information is missing .
accuracy .
Accuracy refers to whether the information and data recorded in the data are accurate , Whether there is abnormal or wrong information . For example, the score in the report card is negative , For example, there is no buyer information in the order , These are all problematic . Ensuring the accuracy of records is also an essential principle of data quality .
Uniformity .
Consistency is generally reflected in data warehouses with a large span . For example, there are many business branches in the company , Consistency must be ensured for the same data . For example, users ID, From online business library processing to data warehouse , Then go to each data application node , It must all be of the same type 、 Keep the same length . So in 《MaxCompute Code guide for data warehouse construction 》 There is “ Public level ” Processing of , Ensure data consistency .
timeliness .
Ensure the timely output of data , Reflect the value of data . For example, decision-making analysts generally hope to see the data of the previous day on the same day, rather than waiting three or five days to see a certain data analysis result , Otherwise, the value of data timeliness will be lost , Make data analysis meaningless .
copyright notice
author[Alibaba cloud Q & A],Please bring the original link to reprint, thank you.
https://en.cdmana.com/2022/02/202202041730170099.html
The sidebar is recommended
- What is the authorization operation of maxcompute user management?
- What is the function of logging?
- What is the function of tracing?
- What does the Hadoop cluster environment include?
- What is the fallback operation managed by maxcompute role?
- What is the function of Java retmote debug?
- What are other SAE diagnostic tool connection instances?
- What is the empowerment operation of dataworks role management?
- What is the authorization management of ACL (object operation)?
- What is the applicable scenario of SAE end cloud joint commissioning?
guess what you like
-
What is the authorization operation of ACL (object operation) authorization management?
-
What is the role of the cloud toolkit plug-in?
-
What does it mean to use a data map as a data management tool?
-
How does Devops drive new forms?
-
What are the facts of OPS work?
-
How to set to prohibit the download of the select results of dataworks to the local?
-
How to set environment variables in serverless creation application?
-
From the perspective of enterprises, what are the four typical enterprise computing power demand models?
-
How to set the IP white list for accessing project?
-
How to reasonably set the label of the field?
Random recommended
- What does continuous integration (CI) mean?
- What does continuous delivery (CD) mean?
- How to set the health check in the serverless creation application?
- How to set project protection (data outflow protection mechanism)?
- What are the advantages of maxcompute?
- How to rewrite the code of linking MySQL database?
- The project saved in disk D cannot be opened in keil5. This line is displayed, and the files on the left are exclamation marks!
- java: Internal error in the mapping processor: java. lang.NullPointerException
- How can we learn software testing well?
- Java write Fibonacci sequence to find the composite number
- Why doesn't my window display? Do you have a look?
- How can protein data be redundant?
- I'm confused about if's little problem
- Why are there only two processes for building slave1 and slave2 nodes in Hadoop cluster
- Why is the elastic layout added to the parent image, and the child images in the parent image will be squeezed out
- Alipay sandbox payment after operation prompted 502 Bad Gateway
- EE308 LAB4
- I still don't quite understand string splicing. Is it applied here
- As soon as the newly bought computer x8pro enters the virtual machine, it will have a blue screen. What's the situation
- How to write this in C language, find the answer!
- Questions about full revolutionary Siamese networks for object tracking
- Find the Java code and result of this problem Define a company employee class. The attributes include name, employee number, department and the number of current employee objects. There are two construction methods
- A web calculator for cosine similarity is implemented in Django
- MySQL cannot be uninstalled. What happens??
- 18: 12:50 [MySQL] error: MySQL closed unexpectedly.
- Big guys, what about this? I'm tired
- Notepad + + every time you open a file, you have to download it again. What's the matter?
- How to solve the failure of pickit3 programming device in MPLAB x ide
- The run box does not pop up when vs runs. It can pop up in VC + + 6.0, but it is useless to press enter after entering?
- Count the number of reverse pairs in an arrangement
- Is there a board problem with vector or adjacency table?
- I, brothers, please
- C language inputs several strings into an array through scanf
- What's wrong with the operation? How to change it?
- Can the mobile phone connect to the computer hotspot access the computer LAN?
- Want to update to win11, but the lack of display is like this. What's going on?
- R language returns the position of data in the sorted array
- How to use int to define n integers and solve them
- Removing Hyper-V in Windows server2016
- Why can't I get through it all the time? It's always wrong answer