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Domain-Driven Design the Wrong Way

by Jan Stenberg on  Apr 26, 2015 2

Applications claimed to have been built using Domain-Driven Design (DDD) in reality often consists of entities or DTOs separating data and logic together with services containing a mix of business and infrastructure logic, Gabriel Schenker states, noting that this also often applies early on to projects building new applications. Lack of knowledge is one major reason for this, Schenker believes.

Implementing Agile in Data Warehouse Projects

by Savita Pahuja on  Apr 14, 2015

This post talks about using an agile implementation for data warehouse projects.

Avoid a Canonical Data Model

by Jan Stenberg on  Apr 12, 2015 15

Standardizing on common models for business objects that are exchanged within an enterprise, e.g. Customer, Order and Product together with the attributes and associations they have, might seem compelling but for Stefan Tilkov this creation of Canonical Data Models (CDMs) is a horrible idea which he strongly advices against.

Oracle NoSQL Database 3.0 Supports Table Data Model and Secondary Indexing

by Srini Penchikala on  Apr 29, 2014 1

The latest version of Oracle NoSQL Database supports tabular data model, secondary indexing, security enhancements via Oracle Wallet integration, and data center enhancements. Oracle recently announced the release of version 3.0 of the distributed key-value database.

Forecasting at Twitter

by Manuel Pais on  Dec 30, 2013

Arun Kejariwal, from Twitter, talked at Velocity Conf London last month about forecasting algorithms used at Twitter to proactively predict system resource needs as well as business metrics such as number of users or tweets. Given the dynamic nature of their data stream, they found that a refined ARIMA model works well once data is cleansed, including removal of outliers.

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