Technical Interview Questions and Answers

1.What is EJB? EJB stands for Enterprise Java Beans. EJB is an essential part of a J2EE platform. J2EE platform have component based architecture to provide multi-tiered, distributed and highly …

How to create a Many to Many Relationship in Salesforce Junction Object: A custom object with two master-detail relationships. Using a custom junction object, you can model a “many-to-many” relationship …

41.is Visitor pattern? In Visitor pattern, we use a visitor class which changes the executing algorithm of an element class. By this way, execution algorithm of element can vary as …

31.What are the entities of Service Locator pattern? Following are the entities of this type of design pattern. Service – Actual Service which will process the request. Reference of such …

21.What is Composite pattern? Composite pattern is used where we need to treat a group of objects in similar way as a single object. Composite pattern composes objects in term …

1.What are Design Patterns? Design patterns represent the best practices used by experienced object-oriented software developers. Design patterns are solutions to general problems that software developers faced during software development. …

Who can able to DELETE a Salesforce Records? The General rule is as below: – Administrator – Record Owner – Above the Record Owner (based on the organization role hierarchy) …

Differences between SOQL and SOSL in Salesforce? SOQL (Salesforce Object Query Language) Let’s you query a object in salesforce. You can have nested queries. Returns a list of sobject records. …

41.Write a query to delete a table from database.? DROP TABLE table-name is the syntax to delete a table from database.

31.When you will face SQLCODE -911? At the time of deadlock or timeout you will face SQLCODE -911.