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The rapid expansion of digital data through computers, mobile, video, social media, digital sensors, etc. combined with major breakthroughs in lower-cost processing power, open source database applications and wider bandwidth has sparked massive interest across the entire business world in the emerging field of Big Data science and analytics.
Big data in large unstructured volumes are too huge to be managed and analyzed through traditional methods. The sheer amount and velocity of today’s data makes capturing, filtering, storing and analyzing a real challenge. New products are developed regularly to deal with this which call for new skill sets and expertise. There’s growing need for individuals who can integrate new infrastructure, platforms and processes into the organization as well as those who can build new analytics and algorithms capable of creating enormous intelligence of great business value. For more information, read our blog post on The growing importance of Data Science and how training in this subject affects your earning potential
Data Science & Analytics has application across all industries:
Data Science Domain Requires Professionals who:
Read more: Core skills required to be a Data Scientist.
Oracle, SQL Server, Teradata
Cassandra, Hadoop, MapReduce,HBase
Aster, Greenplum, Netezza
Hive, Pig, Lucene, Mahout, Solr
Angoss, MATLAB, R, SAS, SPSS
ARCH, GARCH, SVAR, VAR, VEC, GAUSS
QlikView, Spotfire, Tableau, yWorks, R
BusinessObjects, Cognos, MicroStrategy
For more information, read our blog post on the advantages that Cassandra has over other traditional RDBMS.
Cassandra is a distributed database for low latency, high throughput services that handle real time workloads comprising of hundreds of updates per second and tens of thousands of reads per second.
PROS is a Big Data software company with prescriptive analytics in their software that facilitates their customers to analyze their data and get the insights and guidance to optimize their pricing, sales and revenue management.
They have a real-time service that computes airline availability, dynamically taking into consideration revenue control data and inventory levels that can change many hundreds of times per second.
This service is queried several thousands of times per second, which translates to tens of thousands of data lookups. Their backend storage layer for this service is Cassandra.
For their real-time solution, PROS realized a need for:
PROS evaluated Cassandra against Oracle Berkeley DB, Oracle Coherence, Terracotta, Voldemort and Redis. Apache Cassandra quite easily topped the list.
When looking to replace a key-value store with something more capable on the real-time replication and data distribution, research on Dynamo, the CAP theorem and eventual consistency model shows Cassandra fits this model quite well. As one learns more about data modeling capabilities, we gradually move towards decomposing data.
If one is coming from a relational database background with strong ACID semantics, then one must take the time to understand the eventual consistency model.
Understand Cassandra’s architecture very well and what it does under the hood. With Cassandra 2.0 you get lightweight transaction and triggers, but they are not the same as the traditional database transactions one might be familiar with. For example, there are no foreign key constraints available – it has to be handled by one’s own application. Understanding one’s use cases and data access patterns clearly before modeling data with Cassandra and to read all the available documentation is a must.
Apache Cassandra is evolving fast and we are learning and understanding its capabilities – especially on the data modeling side. We see it as a distributed NoSQL database of choice for our Big Data services and solutions.
Edureka provides a comprehensive Data Science course for those who wish to become a data scientist. The course covers a range of Hadoop, R and Machine Learning Techniques encompassing the complete Data Science study. Edureka also provides Cassandra course that helps you master NoSQL databases. This course is designed to provide knowledge and skills to become a successful Cassandra expert.