what is difference between ods and data warehouse

requires timeliness. It takes tens of seconds for the customer to save a sum of money, which requires the database to store data for a short period of time. The analysis system is post-event. It must provide all valid data within the specified time period. The data is massi

What is a data warehouse, and what is the difference between a databaseDataWarehouseis a subject-oriented (Subject oriented), integrated (integrate), A relatively stable (non-volatile),

The difference between OLAP and OLTP and what is Data Warehouse OLAP is often referred to as a data warehouse. But the

what is ODS. The ODS (Operational data Store) is an optional part of the Data Warehouse architecture that has some of the features of the

enterprises, ODS data has four basic features: topic-oriented, integrated, variable, and data current or near current. We can also see that ODS is a data storage technology between DB and DW. Compared with the application-oriente

1. The concept of Data Warehouse began in the 1980s S and first appeared in the book William H. Inmon, known as "the father of Data Warehouse. As people deeply recognize and constantly improve the research, management, and maintenance of large data systems, after summing up,

construction. What is ODS? ODSOperational dataStoreThat is, operational data storage, is"A topic-oriented, integrated, and variable set of data that reflects the current

determines its representation of external data. To decide what products and technologies to use to build the core of the data warehouse, we need to analyze the technical features of the Data Warehouse. For the existing business s

system does not contain student information, as shown in the system database model: The student status management system is built and managed by the student office. The database stores basic information such as the student's degree, graduation destination, and family status, and stores the student's exam scores for each semester. Because the system focuses on students, there is no instructor information,

What is warehouse filling and warehouse filling?The behavior of buying a stock or fund again after the price falls below the price of the stock or fund is called replenishment. Effect of warehouse filling: lower To lower the unit

What is the server used? Can data be saved? So what is the difference with the database? For example, the user's profile picture is stored on the server. I don't know

Warehouse, in the case of a large number of databases exist, in order to further mining data resources, for decision-making needs, it is by no means the so-called "large database." So what is the difference between a

type is greater than the source type: for example, int data can be automatically converted to double type2: Force data type conversion (narrowing conversion)Precede the variable with parentheses, specifying the type of the strong conversion in parenthesesExample: double A = 40.9;int b= (int) A;Note: Casting can lose numeric precision, such as a double type varia

In ThinkPHP, what is the difference between the I () method receiving data and the create () method receiving data ?? In ThinkPHP, what is the diff