Sun 310-051: Sun Certified Enterprise Architect for J2EE Technology
#41. A department of Company Inc uses entity beans with bean-managed persistence to access an RDBMS. The entity beans contain the code to access the database directory. Company decides that other departments can reuse the business logic to access their database, which include an OODBMS and a different type of RDBMS. Which statement best describes how Company can integrate their departmental business logic to access the various databases, and to ensure that the entity bean code is easy to read?
#42. Company Grapes, a vineyard, is developing an online ordering system to sell wine online. Because of local sales restrictions, the vineyard is working with local wine stored to deliver wine to the customers. The requirements for the system are: 1. Customers keep their choices in a "wine list". 2. Requests are fulfilled as the vintage become available. 3. Local wine shops track wines that have been ordered by customers in their area. 4. All order and product data is stored in an RDBMS. 5. Both customers and local wine shops use the Internet to access the system. 6. The system must be scalable and secure. Which two interactions must be secure? (Choose two)
#44. You have determined that the interactions between objects in a system are complex, and that the objects are tightly coupled. Furthermore, additional functionality would require the modification of many objects in the system. Which pattern will solve this problem?
#49. The requirements for an online shopping application are: 1. It must support millions of customers. 2. The invocation must be transactional. 3. The shopping cart must be persistent. Which technology is required to support these requirements?
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