Enterprise Data Warehouse (EDW) | Overview
ScienceSoft has been rendering a full range of data warehousing services since 2005.
An enterprise data warehouse (EDW) is a structured subject-oriented repository to store all company’s business data from disparate data sources. By consolidating data in a central database, the enterprise data warehouse makes it ready for reporting and analysis across the company.
To enable answering both enterprise-level and department-specific questions, the enterprise data warehouse ingests data from all corporate business-critical software and external data sources, including:
DATA WAREHOUSE VS ENTERPRISE DATA WAREHOUSE
- Stores data for particular business units
- Answers department-specific questions
- Consolidates and stores data for all business units
- Answers enterprise-level and department-specific questions
An enterprise data warehouse is a core element of a BI solution, which is usually structured with the following components:
A data source layer
Data from internal and external data sources.
A staging area
An intermediate storage area of temporary nature for data processing under the extract, transform and load (ETL) process. ETL consolidates data from multiple sources and transforms it into a modeled format suitable for storing in the enterprise DWH. Cloud-based enterprise data warehouses, due to their scalability, use ELT (extract, load, transform), which means that the transformation step is performed after data loading into an enterprise data warehouse.
Data storage layer
Centralized storage where data is made accessible for analytics (querying, reporting) and sharing.
Analytics and BI
Data in the enterprise data warehouse can be queried via OLAP tools, data mining tools, reporting and visualization tools.
Sample architecture of an enterprise data warehouse structure with a staging area:
Enterprise data warehouse types
There are three deployment environment types for data warehousing solutions:
- On-premises – a company purchases all required hardware and software to build and deploy an enterprise data warehouse and maintains it further on.
- Cloud-hosted – a company deploys an enterprise data warehouse in the cloud, eliminating the need to purchase and maintain hardware and software.
- Hybrid – a company augments an on-premises enterprise data warehouse with a cloud-hosted repository.
- Full control over the enterprise data warehouse. In case of a failure, an in-house IT team has direct access to the DWH’s problem area for hardware and software tuning. Moreover, data security remains strictly under the in-house IT team’s control.
- Full compliance with the required data standards. Data security compliance is easier to achieve with on-premises enterprise DWHs.
- Availability. Business users from a facility where the enterprise data warehouse is located can effectively access all the data stored in the data warehouse without the dependence on the internet connection.
see the points of caution
- Full responsibility. Together with the control of the on-premises enterprise data warehouse, a company is fully responsible for its implementation and maintenance.
- Complexity of agile scaling. To comply with the increased storage or compute requirements, you need to purchase new hardware, which may result in the need to tune or replace current software.
- Scalability. The inherent agility of cloud data warehouses allows upscaling and downscaling with no impact on the enterprise data warehouse performance.
- Reduced costs. There’re no hardware-related costs (hardware acquisition, deployment, maintenance, administration, etc.). And if you opt for Enterprise Data Warehouse as a Service, all software acquisition and maintenance costs are eliminated either.
SEE the POINTS OF CAUTION
- Data compliance. Although most cloud providers have security features difficult for attackers to penetrate, some industry standards and regulations (FDA, HIPAA, etc.) still require sensitive data to be stored on-premises.
- The risk of budget overruns. Unexpectedly increased query volumes, which require additional compute/storage resources, lead to overspending if no controlling or limiting the cloud resources is set up.
- Cloud flexibility. Meeting storage and compute requirements with the near-unlimited cloud resources.
- Data compliance. Ensuring sensitive data is stored within the environment, which fully meets data compliance standards.
SEE the POINTS OF CAUTION
- DWH costs. The company has to cover the maintenance costs and operating expenses of the on-premises DWH system while still paying the subscription fee for cloud DWH services.
Data integration and management
- Data integration with ETL/ELT.
- Full and incremental data extraction/load.
- Structured, semi-structured, unstructured data ingestion.
- Big data ingestion.
- Streaming data ingestion.
- Data loading and querying using SQL.
- Subject-oriented data repository.
- Time-variant (data from the historical point of view) data repository.
- Nonvolatile (read-only) data repository.
- Granular data storage.
- Metadata storage.
- Storage in multiple environments (cloud, on-premises, hybrid).
- Automated DWH maintenance tasks – backups, replication, patching, etc.
- Advanced data searching (materialized view support, data indexes, result-caching, etc.).
Security and compliance
- Data encryption.
- Securing data access with user authentication and authorization.
- Granular access control (row- and column-level).
- Compliance with national, regional, and industry-specific regulations (for example, GDPR, HIPAA, PCI DSS).
To keep huge sets of structured, semi-structured, and unstructured data in a data lake and export processed data into a data lake to analyze it with ML, big data analytics, etc. services.
Self-service analytics software
To enable business users to make decisions based on timely and relevant reports, queries and analysis customized and conducted according to their own needs.
Machine learning software
To enable data scientists to build machine learning models with processed and cleaned data from the enterprise data warehouse to predict a company’s revenue, assess financial risks, forecast market trends and the company’s performance, etc.
- Compliance of the enterprise data warehouse solution with business objectives, economic justification of enterprise data warehouse capabilities.
- Architecture flexibility for further evolution of the enterprise data warehouse without compromising its performance.
- Automation of enterprise data warehouse maintenance and administration tasks (ETL monitoring, managing data quality and data security, etc.) to decrease operational costs.
- Enterprise data warehouse stability and availability for quickly accessing business-critical data in a centralized location.
- High security and data protection standards of the enterprise data warehouse.
- Out-of-the-box integrations with data sources; SDKs in most common programming languages for reduced development costs.
Reduced time to insight due to consolidated corporate data ready for analysis.
Increased productivity of business users and the elimination of the communication bottlenecks across departments due to quick and easy role-based access to structured and high-quality data.
Saved time of IT staff and data analysts due to automated data management procedures (data collection, transformation, cleansing, structuring, modeling, etc.).
Enhanced data accuracy, consistency and security due to the centralized data governance approach.
A solid foundation for advanced analytics initiatives.
Expansion of data literacy across the enterprise.
The selected platforms are recognized leaders in enterprise data warehousing solutions (The Forrester Wave, Gartner Magic Quadrant), which are fully compliant with the key criteria for an enterprise-scale DWH: almost instant scalability of compute and storage resources (due to the cloud-based nature), high performance and availability (up to 99.99% uptime), advanced security, etc.
Azure Synapse Analytics
A scalable data warehousing solution with a node-based architecture, which employs parallel query processing to achieve fast query response time and high query throughput. Azure Synapse unifies the Azure Data Lake storage and the SQL data warehouse to allow direct querying of raw data and combining relational and non-relational data for deeper analytics insight.
Dynamic data masking, built-in authentication, authorization, data encryption, etc.
- Data storage – $122.88 per TB/month ($ 0.17/TB/hour). The data storage size includes your DWH data and 7 days of incremental snapshot storage.
- Query performance pricing depends on the service level and region.
A scalable data warehousing service, which achieves great performance due to such features as massively parallel processing, columnar data storage, query optimizer, result caching, etc. With the Redshift Spectrum feature it is possible to query data directly from Amazon to enable data lake analytics.
End-to-end encryption, granular access controls, network isolation, etc.
The price is charged according to the amount of stored data and the number of nodes. The on-demand pricing option starts from $0.25/hour (hourly rate based on the type and number of nodes in the cluster).
A scalable data warehousing solution backed up with the Dremel technology designed to instantly run queries on massive structured datasets.
Data encryption, Google’s virtual private cloud policy controls, etc.
Storage costs: $0.02/GB/mo ($0.01/GB/month for long-term storage).
Streaming inserts: $0.01/200 MB.
For query performance, 2 subscription options are available:
- Pay-as-you-go ($5/TB, 1st TB/month is free).
- Flat-rate pricing (from $10,000/ month for a dedicated reservation of 500 processing units).
Having 15+ years of hands-on experience in delivering DWH solutions, partnerships with global technology leaders (including Microsoft, Amazon and Oracle), we know how to deliver tailored EDW solutions that help our clients meet their tactical and strategic business objectives.
EDW consulting and implementation
To help you establish an EDW solution, we cover:
- Business needs analysis and requirements elicitation.
- EDW implementation strategy design.
- EDW configuration and development.
- EDW integration.
- Data management procedures.
- User training.
- EDW support and administration (if required).
EDW as a Service
For you to avoid EDW development, implementation and management, we customize an enterprise data warehouse and rent it out to you on a subscription fee basis.