What is difference between entity and bean?
What is difference between entity and bean?
This is a summary of the differences between entity and session beans….Session beans and entity beans compared.
| Session bean | Entity bean |
|---|---|
| Is created and used by a single client. | May be shared by multiple clients. |
| Has no primary key. | Has a primary key, which enables an instance to be found and shared by more than one client. |
What is EJB and write about the types of EJBs and differences between stateful and stateless session beans?
Enterprise JavaBeans (EJBs) can be one of three types: session beans, entity beans, or message-driven beans. Session beans can be stateful or stateless and are used for business logic functionality. Stateless session beans are used for business services. Stateful session beans do maintain state across client calls.
Which callback method of Entitybean interface is used for saving the entity bean data to a persistent storage?
The ejbStore method is called by the container whenever a transaction is about to end. Its purpose is to save the persistent data to an outside resource, such as a database. The ejbLoad method is called by the container whenever a transaction has begun or when an entity bean is instantiated.
Which is a type of entity bean?
There are two types of entity beans: bean-managed persistent and container-managed persistent.
How to tell the difference between mitosis and meiosis?
Key Takeaways: Mitosis vs Meiosis 1 Mitosis and meiosis are nuclear division processes that occur during cell division. 2 Mitosis involves the division of body cells, while meiosis involves the division of sex cells. 3 The division of a cell occurs once in mitosis but twice in meiosis. Mas cosas…
How are gametes different from mitosis and eggs?
Gametes are more commonly called sperm in males and eggs in females. Unlike in mitosis, the gametes produced by meiosis are not clones of the original cell, because each gamete has exactly half as many chromosomes as the original cell.
How does meiosis give rise to non identical sex cells?
Meiosis give rise to the non-identical sex cells, having two consecutive nuclear divisions, first meiotic division (or meiosis I) and second meiotic division (meiosis II). The nuclear division also has four stages which are prophase, metaphase, anaphase, and telophase.
What are the similarities between interphase and mitosis?
What are the Similarities Between Interphase and Mitosis? 1 Interphase and mitosis are two phases of cell cycle. 2 Both are important events of a cell life cycle. 3 Both interphase and mitosis are vital for multicellular organisms for growth and reproduction.