diff --git a/specification/datafactory/resource-manager/Microsoft.DataFactory/stable/2018-06-01/entityTypes/LinkedService.json b/specification/datafactory/resource-manager/Microsoft.DataFactory/stable/2018-06-01/entityTypes/LinkedService.json
index 15e195fe1943..2dae0cfa8a58 100644
--- a/specification/datafactory/resource-manager/Microsoft.DataFactory/stable/2018-06-01/entityTypes/LinkedService.json
+++ b/specification/datafactory/resource-manager/Microsoft.DataFactory/stable/2018-06-01/entityTypes/LinkedService.json
@@ -1526,11 +1526,46 @@
       "description": "MySQL linked service properties.",
       "type": "object",
       "properties": {
+        "driverVersion": {
+          "type": "object",
+          "x-ms-format": "dfe-string",
+          "description": "The version of the MySQL driver. Type: string. V1 or empty for legacy driver, V2 for new driver. V1 can support connection string and property bag, V2 can only support connection string."
+        },
         "connectionString": {
           "type": "object",
           "x-ms-format": "dfe-string",
           "description": "The connection string. Type: string, SecureString or AzureKeyVaultSecretReference."
         },
+        "server": {
+          "type": "object",
+          "x-ms-format": "dfe-string",
+          "description": "Server name for connection. Type: string."
+        },
+        "port": {
+          "type": "object",
+          "x-ms-format": "dfe-int",
+          "description": "The port for the connection. Type: integer."
+        },
+        "username": {
+          "type": "object",
+          "x-ms-format": "dfe-string",
+          "description": "Username for authentication. Type: string."
+        },
+        "database": {
+          "type": "object",
+          "x-ms-format": "dfe-string",
+          "description": "Database name for connection. Type: string."
+        },
+        "sslMode": {
+          "type": "object",
+          "x-ms-format": "dfe-int",
+          "description": "SSL mode for connection. Type: integer. 0: disable, 1: prefer, 2: require, 3: verify-ca, 4: verify-full."
+        },
+        "useSystemTrustStore": {
+          "type": "object",
+          "x-ms-format": "dfe-int",
+          "description": "Use system trust store for connection. Type: integer. 0: enable, 1: disable."
+        },
         "password": {
           "$ref": "../datafactory.json#/definitions/AzureKeyVaultSecretReference",
           "description": "The Azure key vault secret reference of password in connection string."
@@ -1539,10 +1574,7 @@
           "type": "string",
           "description": "The encrypted credential used for authentication. Credentials are encrypted using the integration runtime credential manager. Type: string."
         }
-      },
-      "required": [
-        "connectionString"
-      ]
+      }
     },
     "PostgreSqlLinkedService": {
       "x-ms-discriminator-value": "PostgreSql",
@@ -5304,12 +5336,37 @@
       "description": "MariaDB server linked service properties.",
       "type": "object",
       "properties": {
+        "driverVersion": {
+          "type": "object",
+          "x-ms-format": "dfe-string",
+          "description": "The version of the MariaDB driver. Type: string. V1 or empty for legacy driver, V2 for new driver. V1 can support connection string and property bag, V2 can only support connection string."
+        },
         "connectionString": {
           "description": "An ODBC connection string. Type: string, SecureString or AzureKeyVaultSecretReference.",
           "type": "object",
           "x-ms-format": "dfe-string"
         },
-        "pwd": {
+        "server": {
+          "type": "object",
+          "x-ms-format": "dfe-string",
+          "description": "Server name for connection. Type: string."
+        },
+        "port": {
+          "type": "object",
+          "x-ms-format": "dfe-int",
+          "description": "The port for the connection. Type: integer."
+        },
+        "username": {
+          "type": "object",
+          "x-ms-format": "dfe-string",
+          "description": "Username for authentication. Type: string."
+        },
+        "database": {
+          "type": "object",
+          "x-ms-format": "dfe-string",
+          "description": "Database name for connection. Type: string."
+        },
+        "password": {
           "$ref": "../datafactory.json#/definitions/AzureKeyVaultSecretReference",
           "description": "The Azure key vault secret reference of password in connection string."
         },
diff --git a/specification/synapse/data-plane/Microsoft.Synapse/stable/2020-12-01/entityTypes/LinkedService.json b/specification/synapse/data-plane/Microsoft.Synapse/stable/2020-12-01/entityTypes/LinkedService.json
index 713b4e989598..3dc7451ed616 100644
--- a/specification/synapse/data-plane/Microsoft.Synapse/stable/2020-12-01/entityTypes/LinkedService.json
+++ b/specification/synapse/data-plane/Microsoft.Synapse/stable/2020-12-01/entityTypes/LinkedService.json
@@ -1310,10 +1310,45 @@
       "description": "MySQL linked service properties.",
       "type": "object",
       "properties": {
+        "driverVersion": {
+          "type": "object",
+          "x-ms-format": "dfe-string",
+          "description": "The version of the MySQL driver. Type: string. V1 or empty for legacy driver, V2 for new driver. V1 can support connection string and property bag, V2 can only support connection string."
+        },
         "connectionString": {
           "description": "The connection string.",
           "type": "object"
         },
+        "server": {
+          "type": "object",
+          "x-ms-format": "dfe-string",
+          "description": "Server name for connection. Type: string."
+        },
+        "port": {
+          "type": "object",
+          "x-ms-format": "dfe-int",
+          "description": "The port for the connection. Type: integer."
+        },
+        "username": {
+          "type": "object",
+          "x-ms-format": "dfe-string",
+          "description": "Username for authentication. Type: string."
+        },
+        "database": {
+          "type": "object",
+          "x-ms-format": "dfe-string",
+          "description": "Database name for connection. Type: string."
+        },
+        "sslMode": {
+          "type": "object",
+          "x-ms-format": "dfe-int",
+          "description": "SSL mode for connection. Type: integer. 0: disable, 1: prefer, 2: require, 3: verify-ca, 4: verify-full."
+        },
+        "useSystemTrustStore": {
+          "type": "object",
+          "x-ms-format": "dfe-int",
+          "description": "Use system trust store for connection. Type: integer. 0: enable, 1: disable."
+        },
         "password": {
           "$ref": "../artifacts.json#/definitions/AzureKeyVaultSecretReference",
           "description": "The Azure key vault secret reference of password in connection string."
@@ -1322,10 +1357,7 @@
           "type": "object",
           "description": "The encrypted credential used for authentication. Credentials are encrypted using the integration runtime credential manager. Type: string (or Expression with resultType string)."
         }
-      },
-      "required": [
-        "connectionString"
-      ]
+      }
     },
     "PostgreSqlLinkedService": {
       "x-ms-discriminator-value": "PostgreSql",
@@ -4846,11 +4878,36 @@
       "description": "MariaDB server linked service properties.",
       "type": "object",
       "properties": {
+        "driverVersion": {
+          "type": "object",
+          "x-ms-format": "dfe-string",
+          "description": "The version of the MariaDB driver. Type: string. V1 or empty for legacy driver, V2 for new driver. V1 can support connection string and property bag, V2 can only support connection string."
+        },
         "connectionString": {
           "description": "An ODBC connection string. Type: string, SecureString or AzureKeyVaultSecretReference.",
           "type": "object"
         },
-        "pwd": {
+        "server": {
+          "type": "object",
+          "x-ms-format": "dfe-string",
+          "description": "Server name for connection. Type: string."
+        },
+        "port": {
+          "type": "object",
+          "x-ms-format": "dfe-int",
+          "description": "The port for the connection. Type: integer."
+        },
+        "username": {
+          "type": "object",
+          "x-ms-format": "dfe-string",
+          "description": "Username for authentication. Type: string."
+        },
+        "database": {
+          "type": "object",
+          "x-ms-format": "dfe-string",
+          "description": "Database name for connection. Type: string."
+        },
+        "password": {
           "$ref": "../artifacts.json#/definitions/AzureKeyVaultSecretReference",
           "description": "The Azure key vault secret reference of password in connection string."
         },