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08: REST constraints (i.e. design rules) interview Q&A

Q1. What are the 6 REST constraints? A1. REST constraints are design rules that are applied to establish the distinct characteristics of the REST architectural style. These constraints don’t dictate what kind of technology to use, and they only define how data is transferred between components and what benefits we…...

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06: RESTful Web services and HATEOAS Q&A

Q1. What is HATEOAS? How does it provide state transition, scalability, and loose coupling? A1. HATEOAS (Hypermedia as the Engine of Application State) is considered the final level of REST. This means that each link is presumed to implement the standard REST verbs of GET, POST, PUT, and DELETE (or…...

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Posted in FAQs Java Web Services, member-paid, WebService
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Auditing database record changes in Oracle

Q. What are some of the considerations in auditing database table data? A. Creating audit tables without any constraints to store record changes.  Audit tables are heavily hit with inserts, hence needs to have fewer indices if at all required. Decide on what combination of triggers are required like  Create,

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Posted in QoS, SQL
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How to write internalized Java applications?

This post answers questions like — How to write internalized Java applications? What do you understand by the terms internationalization (i18n) and localization (l10n) relating to Java programming? What is a ResourceBundle? Localization (aka i10n, where 10 is the number of letters between the letter ‘i’ and the letter ‘n’

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Posted in Java Miscellaneous
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Scalable Straight Through Processing System (OLTP) vs OLAP in Java

Large mission critical applications use Straight Through Processing, and these systems need to be highly scalable. So, when you apply for these high paying jobs, it really pays to prepare for your job interviews with the following questions and answers. Q. What is Straight Through Processing (STP)? A. This is…...

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06: ♦ MVC0, MVC1, MVC2, MVP, MVVM, and MVW web design patterns Java examples

Q1. What’s wrong with Servlets? What is a JSP? What is it used for? What do you know about model 0 (aka MVC0), model 1 (aka MVC1) and model 2 (aka MVC2) patterns? In “model 2” architecture, if you set a request attribute in your JSP, would you be able…...

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001B: ♦ Java architect design concepts interview questions & answers

Continuation of Java architecture interview Q&A with integration styles & architecture diagrams – part 1 Q3. Can you discuss some of the high level architectures you are experienced with? A3. Be prepared for a white board session on architectures, especially the bird’s eye view of the last application you had…...

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Why does good API design matter?

Q1. Why is a good API design important? A1. The Application Programming Interfaces (i.e. APIs) are fine grained services/libraries used by other applications, systems and libraries. A good API design improves flexibility, stability, and extendability of your application. Now a days, applications are built as reusable components or services. A…...

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