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1. The meaning of business intelligence
You may have heard of Power BI, Tableau and other tools for business analysis before, but you might think that they are used to make graphs, dashboards, and reports.
According to the definition of Wikipedia, Bl (Business lntelligence) refers to business intelligence or business intelligence. It is a complete set of solutions to effectively integrate the existing data in the enterprise, quickly and accurately provide reports and make decisions. , To help companies make wise business management decisions.
It can be said that the business intelligence system provides a complete set of tools from data to mining business value , not just data visualization.
A single tool cannot achieve the entire business intelligence requirements. Power BI and Tableau need to be combined with other systems to achieve better functions.
A complete business intelligence system is as follows:
(1) For a system, the most important thing is people . People are divided into various roles, including:
- The decision-making level
is responsible for reports and key indicators. - The management
is responsible for reporting and analysis, ad hoc query (Ad hoc Query), early warning (automation), etc. - Employee
online and offline analysis and processing.
Business intelligence should meet the needs of each role.
(2) A system includes the following parts:
- Business data sources (databases)
can integrate data from multiple data sources, such as financial data, business management data, customer relationship management data, product data, sales data, etc., which require separate and integrated analysis. - Data Warehouse (Data Warehouse)
now has serious data islands and is difficult to integrate. Data is scattered and distributed in various systems, such as production systems, logistics systems, sales systems, and financial systems. The data warehouse can integrate data.
(3) Another very important point is the business process.
Two, data warehouse system
A typical data warehouse system is as follows:
The bottom layer is distributed databases and legacy data, such as CRM, financial, product and other data.
The data is automatically synchronized to the Data Warehouse in some way.
The data format of ODS (Operational Data Store) and Data Warehouse is not completely consistent.
ETL (Extract Transform Load) refers to extracting data from a business database, transforming it into a certain form, and storing it in DW.
Extracting data at a certain time node generates a snapshot.
In the DW, the data is divided into three dimensions to become Data Cube.
According to the definition of Baidu Encyclopedia, On-Line Transaction Processing Online Transaction Processing (OLTP), also referred to as a transaction-oriented processing, characterized in that the basic data of the user can be received by reception immediately transferred to the central calculation processing, and in a very short period of time Providing processing results inside is one of the ways to quickly respond to user operations. It can be said that business data except financial data is OLTP, which is closer to actual business .
On line Analysis Processing online analytical processing (OLAP) is a software technology that enables analysts to quickly, consistent, interactive observation information from all aspects, in order to achieve in-depth understanding of the data. It has the characteristics of FASMI (Fast Analysis of Shared Multidimensional Information), which is the rapid analysis of shared multidimensional information. OLAP is closer to serving top-level reporting .
The data to be analyzed is often a superposition of historical data. Data is rarely deleted, and certain historical trends can be analyzed.
Three, BI system
1. Regular BI
Common BI includes Oracle, SAP, and Microsoft.
For example, Microsoft's BI tools include SQL Server, Excel (including Power Map), and Power BI (including BI Report Server).
Power BI provides a complete set of tools that can be applied to a complete business analysis process.
2.Power BI
Power BI is divided into desktop version and online version . There are certain differences between the two. You can choose according to your needs. Its address is https://powerbi.microsoft.com/zh-cn/ and its interface is as follows:
Power BI provides various types of plug-ins that can achieve different effects.
The desktop version can load data and obtain data from a variety of data sources , including Excel, SQL Server, Oracle, MySQL, etc.
Power BI can view data, display data, analyze data, and establish the relationship between data tables and data tables.
At the same time, you can view the amount of data, the amount of non-repetitive data, and you can easily realize various data visualizations , and have interactive features .