inmon data warehouse architecture

sensing data locations: reading data, mapping data (map), re-scheduling data using a key value, and then simplifying (Reduce) the data to get the final output. Amazon Elastic Map Reduce (EMR): Managed solution that runs on Amazon Elastic Compute Cloud (EC2) and simple str

ETL technical support work are briefly described. After the Data Warehouse is on-line, the ETL group needs to provide technical support for the normal operation of the ETL work. Typically, this technical support work is divided into four levels. 1. The first level of technical support is typically a phone support person, which is a Technical support services window (Help Desk) type. If there is an error in

, wheels, transmission shafts, etc. The driving principle is:Motor-gear coupling-reduction gear-coupling-Drive Shaft-Wheel Hoisting Mechanism Composition of the hoisting mechanism :: : The lifting mechanism is mainly composed of the driving device, transmission device, winding device, take device and brake device. In addition, you can also install various auxiliary devices as needed, such as a limiter and a weight limiter. The lifting mechanism can be divided into single-hook