Exam 14: Using Relational Databases to Provide Object Persistence

Call-level APIs generally violate separation of ________.

The conceptual gap between the object-oriented approach to application design and the relational model is often labeled as a ________.

The identity of the core elements (objects/entity instances)is dealt with differently in the object-oriented and relational worlds.

In most cases,the relationship between a class in the object-oriented world and a relational table is one-to-one.

In the object-oriented world,a typical way to access a data item is to call the accessor method associated with a specific attribute.

ORM frameworks provide support for ________.

________ enables Java programs to access SQL databases.

ORM frameworks do not generate SQL code.

ORM frameworks often include a custom query language.An example of this is HQL.

Pulling strategies determine when and how a framework retrieves persistent objects to the run-time memory.

Serialization's performance is scalable and provides sufficient response time.

Lack of automatic SQL code generation is a disadvantage in the call-level API approach.

An inheritance structure can be represented in at least four ways in a database.

Object-oriented environments and relational environments have the same navigational model for accessing persistent data.

A disadvantage of Object-Relational Mapping Frameworks is:

ORM frameworks provide a layer of ________ that separates the object-oriented applications from the details of the database implementation.

Object-relational mapping frameworks move the management of ________ outside of the core structure of the object-oriented applications.

In HQL,an implicit association join allows us to use object-oriented navigation in the queries.

________ refers to the process of writing an object into a storage medium or communication channel as a data stream.

Object-oriented databases never took off because of: