Change some leftover references to external data store to data connec…

…tion

Data connection feature was called external data store in its beta phase
(in Hazelcast 5.3). Apparently there are still some references to the
old name left. I have tried to capture everything, apart from the names
of the pages / links - I don't understand how the redirects work exactly
and didn't want to break anything.

docs/modules/configuration/pages/dynamic-config.adoc

@@ -80,7 +80,7 @@ Dynamic configuration is supported for the following data structures:
 - CardinalityEstimator
 - PNCounter
 - FlakeIdGenerator
-- ExternalDataStore
+- DataConnection
 
 [[persistence]]
 == Persisting Dynamic Configuration

docs/modules/integrate/pages/jdbc-connector.adoc

@@ -45,11 +45,11 @@ p.readFrom(Sources.jdbc(
 )).writeTo(Sinks.logger());
 ```
 
-You can also use a configured xref:external-data-stores:external-data-stores.adoc#defining-external-data-stores[external data store] as a JDBC Source:
+You can also use a configured xref:external-data-stores:external-data-stores.adoc#defining-external-data-stores[data connection] as a JDBC Source:
 ```java
 Pipeline p = Pipeline.create();
 p.readFrom(Sources.jdbc(
-    externalDataStoreRef("my-database"),
+    dataConnectionRef("my-database"),
     (con, parallelism, index) -> {
         PreparedStatement stmt = con.prepareStatement(
               "SELECT * FROM person WHERE MOD(id, ?) = ?)");
@@ -88,14 +88,14 @@ p.readFrom(KafkaSources.<Person>kafka(.., "people"))
 ));
 ```
 
-You can also use a configured xref:external-data-stores:external-data-stores.adoc#defining-external-data-stores[external data store] as a JDBC sink:
+You can also use a configured xref:external-data-stores:external-data-stores.adoc#defining-external-data-stores[data connection] as a JDBC sink:
 
 ```java
 Pipeline p = Pipeline.create();
 p.readFrom(KafkaSources.<Person>kafka(.., "people"))
  .writeTo(Sinks.jdbc(
          "REPLACE INTO PERSON (id, name) values(?, ?)",
-         externalDataStoreRef(JDBC_DATA_STORE),
+         dataConnectionRef(JDBC_DATA_STORE),
          (stmt, item) -> {
              stmt.setInt(1, item.id);
              stmt.setString(2, item.name);

docs/modules/spring/pages/configuration.adoc

@@ -226,7 +226,7 @@ you must enable the permissions for transactions. For further information, see t
 ** `semaphore`
 ** `countDownLatch`
 ** `lock`
-** `externalDataStore`
+** `dataConnection`
 ** `cpmap`
 +
 [source,xml]

docs/modules/sql/pages/mapping-to-jdbc.adoc

@@ -64,32 +64,31 @@ In the MySQL database, create a `people` table.
 CREATE TABLE people (id INT PRIMARY KEY, name VARCHAR(100))
 ```
 
-Use the `CREATE MAPPING` statement to tell the JDBC connector the name of your data store configuration.
+On all your members define a data connection of type `JDBC`:
 
 ```yaml
-external-data-store:
-  mysql-database: <1>
-    class-name: com.hazelcast.datastore.JdbcDataStoreFactory
-    properties:
-      jdbcUrl: jdbc:mysql://dummy:3306
-      username: xyz
-      password: xyz
-    shared: true
+hazelcast:
+  data-connection:
+    my-mysql-database:
+      type: JDBC
+      properties:
+        jdbcUrl: jdbc:mysql://dummy:3306 <1>
+        user: xyz
+        password: xyz
+      shared: true
 ```
 <1> Configuration details for a MySQL database.
 
+Use the `CREATE MAPPING` statement to tell the JDBC connector the name of your data connection.
+
 Create the mapping.
 
 ```sql
 CREATE MAPPING people
-TYPE JDBC <1>
-OPTIONS ( 
-  'externalDataStoreRef'='mysql-database' <2>
-)
+DATA CONNECTION 'mysql-database'
 ```
 
-<1> The name of the connector.
-<2> The name of the external data store configuration on your members.
+<1> The name of the data connection configuration on your members.
 
 == Data Type Mapping Between Hazelcast and MySQL
 Hazelcast supports a subset of SQL data types. For MySQL data types, see the https://dev.mysql.com/doc/refman/8.0/en/data-types.html[official MySQL documentation]. The following MySQL types are mapped to the respective Hazelcast SQL type: