How Is Data Stored in GaussDB(DWS)?

GaussDB(DWS) efficiently imports data from various sources through several modes. For details, see section Importing Data in the Data Warehouse Service (DWS) Developer Guide

• Importing data from the OBS

  Upload data to OBS and then export it to GaussDB(DWS) clusters. Data formats such as CSV and TEXT are supported.

• Inserting data with INSERT statements

  Use the gsql client tool provided by GaussDB(DWS) or the JDBC/ODBC driver to write data to GaussDB(DWS) from upper-layer applications. GaussDB(DWS) supports complete database transaction-level CRUD operations. This is the simplest method and is applicable to scenarios with small data volume and low concurrency.

• Importing data from MRS with MRS as the ETL.

• Importing data with the COPY FROM STDIN command

  Run the COPY FROM STDIN command to write data to a table.

• Importing data from a remote server to GaussDB(DWS) using GDS

  Use the GDS data import function provided by GaussDB(DWS) to import data files from a common file system (for example, an ECS).

• Migrating data to GaussDB(DWS) using CDM