| Base of difference | Azure Table Storage Service | Azure SQL Service |
| Type of Storage | This will follows a NoSQL type of storage on Azure. | When we say about Azure SQL Service this will follows the relational storage structure on Azure. |
| Relationship | When we say about the relationship in Azure Table Storage Service there in no relationship in between tables. | When we say about the relationship in Azure SQL Table we define relationships between tables which are defined by means of the foreign keys. |
| Data format | In Azure Table we store data in key-value format and it is referred as Entity. | When we say about Azure SQL Table we stored data in rows and columns combination in the SQL table. |
| Data Schema | When we say about data schema in Azure Table Storage it is not enforced for storage. | But when we say about the data schema in Azure SQl Table it is enforced to store data and if the schema violation occurs then it result is an error. |
| Partition and Row Key | When we say about the partition and row key combination these are considered unique for each entity. | When we say about Azure SQL Table its Uniqueness can be defined by the user by means of a primary key or unique key. |
| Service used for | In Azure Table Storage service this service can be used for storing log information or to diagnostics data. | In Azure SQL Table service we widely used for transaction-based applications. |