Document SpringPhysicalNamingStrategy

Closes gh-9084

Author: snicoll

spring-boot-docs/src/main/asciidoc/howto.adoc

@@ -1898,12 +1898,24 @@ The most common options to set are:
 In addition all properties in `+spring.jpa.properties.*+` are passed through as normal JPA
 properties (with the prefix stripped) when the local `EntityManagerFactory` is created.
 
+
+
+[[howto-configure-hibernate-naming-strategy]]
+=== Configure Hibernate Naming Strategy
 Spring Boot provides a consistent naming strategy regardless of the Hibernate generation
 that you are using. If you are using Hibernate 4, you can customize it using
 `spring.jpa.hibernate.naming.strategy`; Hibernate 5 defines a `Physical` and `Implicit`
-naming strategies: Spring Boot configures `SpringPhysicalNamingStrategy` by default. This
-implementation provides the same table structure as Hibernate 4. If you'd rather use
-Hibernate 5's default instead, set the following property:
+naming strategies.
+
+Spring Boot configures `SpringPhysicalNamingStrategy` by default. This implementation
+provides the same table structure as Hibernate 4: all dots are replaced by underscores and
+camel cases are replaced by underscores as well. By default, all table names are generated
+in lower case but it is possible to override that flag if your schema requires it.
+
+Concretely, the `TelephoneNumber` entity will use a `telephone_number` with the default
+strategy.
+
+If you'd rather use Hibernate 5's default instead, set the following property:
 
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