Monday Sep 29, 2014

Partner Webcast – Oracle NoSQL key-value database

White Papers: Top Reasons for Using Oracle NoSQL Database to Build Next-Generation Applications

The Oracle NoSQL Database is a horizontally scaled, Key-Value database for Web Services and Cloud, designed specifically to provide highly reliable, scalable and available data storage across a configurable set of systems that function as storage nodes. Oracle NoSQL Database provides a powerful and flexible transaction model that greatly simplifies the process of developing a NoSQL-based application. It scales horizontally with high availability and transparent load balancing even when dynamically adding new capacity.

With Big Data becoming the biggest thing in IT since the internet itself, developers everywhere are focused on applications to accelerate businesses. 

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Monday Apr 07, 2014

ADF and alternate unique keys revisited

Today I'd like to share a quick (and dirty) trick to handle one nuisance of well known pattern to achieve uniqueness of "non-primary key" ADFBC entity attributes. If you ever needed to enforce a particular attribute to contain globally unique values you may end up with two solutions:

1. Check it on the db site and then handle the unique constraint violation exception in DCExceptionHandler replacing dirty SQL message with a pretty one that you provide

2. Try to catch it before it even reaches DB and handle it in a nice way using entity validation messages

Obviously the second approach seems to be much better from both architectural and practical point of view (let alone the fact that it does not rule out using the former one at the same time!).

[Read More]
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