[Udacity] Data Engineer (3) 썸네일형 리스트형 Lesson 2: Relational Data Models Rule 1: The information rule: All information in a relational database is represented explicitly at the logical level and in exactly one way – by values in tables. More information on Codd's 12 Rules can be found here: Wikipedia link Importance of Relational Databases: Standardization of data model: Once your data is transformed into the rows and columns format, your data is standardized and you.. Lesson 1: Introduction to Data Modeling Databases: A database is a structured repository or collection of data that is stored and retrieved electronically for use in applications. Data can be stored, updated, or deleted from a database. Database Management System (DBMS): The software used to access the database by the user and application is the database management system. Check out these few links describing a DBMS in more detail. In.. [Introduction to Data Engineering] Roles of a Data Engineer & Course road-map Q. What do data engineers do? A. Data engineers gather all kinds of data from different sources, process and combine this data, and then store the clean data in a place that can be easily accessed. The goal is to get everything ready so that a data scientist, business analyst, or really anyone at the company can use this data without having to do much wrangling. Data engineers automate this proc.. 이전 1 다음
