The difference between SQL and DynamoDB
DynamoDB uses the NoSQL model, which means that it is a non-relational database system. The difference between a relational database and DynamoDB is outlined in the following table:
SQL | DynamoDB |
The SQL database system uses the persistent connection and SQL commands. | DynamoDB uses HTTP/HTTPS requests and API operations. |
RDBMS's fundamental structure is a table, and its schema must be defined in advance before any operation happens on a table. | DynamoDB uses the primary key, and a schema is not required to be defined in advance. It also uses various data sources. |
All table information is accessible and we can query almost all data. SQL is rich in query processing. | Only the primary key is available for querying. To get more flexibility in querying data, one must use secondary indexes. |
In RDBMS, information is stored in rows of tables. | In DynamoDB, information is stored as items in a table and the item structure can vary as it is schemaless. |
SQL databases use a select... |
