Understanding Data Mapping and Data Modeling Techniques

By |2020-10-14T10:40:50+00:00October 14th, 2020|

Enterprise data is getting more dispersed and voluminous by the day, and at the same time, it has become more important than ever for businesses to leverage data and transform it into actionable insights. However, enterprises today collect information from an array of data points, and they may not always speak the same language. To integrate this data and make sense of it, data mapping is used which is the process of establishing relationships between separate data models.

What is Data Mapping? How to Do Data Mapping?

Data mapping is the process of extracting data fields from one or multiple source files and matching them to their related target fields in the destination. Data mapping helps consolidate data by extracting, transforming, and loading it to a data warehouse. This mapped data can then be used for producing relevant insights that can improve business efficiency.

For example, in Figure 1, ‘Name,’ ‘Email,’ and ‘Phone’ fields from an Excel source are mapped to the relevant fields in a Delimited file, which is our destination.

source to target data mapping

Data mapping and transformation tasks vary in complexity, depending on the hierarchy of the data being mapped, as well as the disparity between the data structure of the source and the target. Every business application, whether on-premise or cloud, uses metadata to explain the data fields and attributes that constitute the data, as well as semantic rules that govern how data is stored within that application or repository.

For example, Microsoft Dynamics CRM contains several data sets which comprise of different objects, such as Leads, Opportunities, and Competitors. Each of these data sets has several fields like Name, Account Owner, City, Country, Job Title, and more. The application also has a defined schema along with attributes, enumerations, and mapping rules. Therefore, if a new record is to be added to the schema of a data object, a data map needs to be created from the source fields to the Microsoft Dynamics CRM account.

Data Mapping Examples & Templates

Depending on the number, schema, and primary keys and foreign keys of the relational databases data sources, database data mappings can have a varying degree of complexity. For example, in the following example, data from three different databases tables is joined and mapped to an Excel destination.


data mapping in Centerprise

Depending on the data management needs of an enterprise and the capabilities of the data mapping software, data mapping is used to accomplish a range of data integration and transformation tasks. It may also offer database schema mapping for pre-integration data cleansing.

Why Data Mapping is Important in ETL Process?

To leverage data and extract business value out of it, the information collected from various external and internal sources must be unified and transformed into a format suitable for the operational and analytical processes. This is accomplished through data modeling, which is an integral step in various data management processes, including:

Data Mapping Helps with Data Integration

For successful data integration, the source and target data repositories must have the same data model. However, it is rare for any two data repositories to have the same schema. Data mapping tools help bridge the differences in the schemas of data source and destination, allowing businesses to consolidate information from different data points easily.

Data Mapping Assists in Data Migration

Data migration is the process of moving data from one database to another. While there are various steps involved in the process, creating mappings between source and target is one of the most difficult and time-consuming tasks, particularly when done manually. Inaccurate and invalid mappings at this stage not only impact the accuracy and completeness of data being migrated but can even lead to the failure of the data migration project. Therefore, using a code-free mapping solution that can automate the process is important to migrate data to the destination successfully.

Data Mapping Makes Data Transformation Simple

Because enterprise data resides in a variety of locations and formats, data transformation is essential to break information silos and draw insights. Data modeling is the first step in data transformation. It is done to create a framework of what changes will be made to data before it is loaded to the target database or data warehouse.

Data Mapping Improves Electronic Data Interchange (EDI) Exchange

Data mapping plays a significant role in EDI file conversion by converting the files into various formats, such as XML, JSON, and Excel. An intuitive data mapping tool allows the user to extract data from different sources and utilize built-in transformations and functions to map data to EDI formats without writing a single line of code. This helps perform seamless B2B data exchange.

Data Mapping Tools: Which Data Modeling Tool Can Streamline Your Business?

Data mapping tools help easily map data from the source to the destination through a GUI. The data mapping tools can be classified into three broad types:

  1. On-Premise data mapping tools: Such tools are hosted on a company’s server and native computing infrastructure. Many on-premise data mapping tools eliminate the need for hand-coding to create complex mappings, and automate repetitive tasks in the data mapping process.
  2. Cloud-Based data mapping tools: These tools leverage cloud technology to help a business perform its data binding projects.
  3. Open-Source data mapping tools: Open-source business mapping tools provide a low-cost alternative to on-premise data mapping solutions. These tools work better for small businesses with lower data volumes and simpler use-cases.

Best Data Mapping Software to Improve ETL Performance

Selecting the right data mapping tool that’s the best fit for the enterprise is critical to the success of any data integration, enterprise data transformation, and data warehousing project. The process involves identifying the unique data moddeling requirements of the business and must-have features.

The key to choosing the right data mapping software is research. Online reviews on websites like Capterra, G2 Crowd, and Software Advice can be a good starting point to shortlist data mapping software that offer the maximum number of features. The next step would be to classify the features of data mapping tools depending on the unique data management needs of your business.

Some of the key features that a data mapping solution must have include:

  • Support for a Diverse Set of Source Systems: Connectivity to a range of structured, unstructured, and semi-structured data sources, including databases, web services, REST APIs, and flat file formats, such as delimited, XML, JSON, EDI, Excel, and text files are the basic staples of all information mapping tools.
  • Graphical, Drag-and-Drop, Code-Free User Interface: It is important to select a data mapping solution that offers you a code-free way to create data maps and process data using built-in transformations using drag-and-drop UI.
  • Ability to Schedule and Automate Database Mapping Jobs: Opt for data integration software with the ability to orchestrate a complete database mapping workflow using time-based and event-triggered job scheduling. These tools include reusable data mapping templates based on text mining patterns and extract desired data from unstructured reports. They can automate data modeling and enterprise transformation processes, thereby delivering analytics-ready data faster.
  • Instant Data Preview Feature for Real-Time Testing and Validation of Mappings: Prevent application mapping errors at the design-time using intuitive features like Instant Data Preview, which lets the user view the processed and raw data at any step of the data modeling process.
  • SmartMatch Functionality for Resolving Naming Conflicts: Resolve discrepancies in field names by using a synonym-driven file reading and business data lineage feature to address the challenges of naming conflicts. This can be done by defining synonyms for a word in the synonym dictionary of a particular project.

Centerprise - data mapping toolsAstera Centerprise Data Mapping Solution for Business 

Designed to offer the same level of usability and performance to both developers and business users, Astera Centerprise is a complete data management solution used by several Fortune 1000 companies. With an industrial-strength ETL engine, data virtualization functionality, support for workflow automation, out-of-the-box connectivity to a range of data sources, and a complete code-free environment, Astera Centerprise automated the entire data journey, from extraction to warehousing.

Download a free 14-day trial and find out how you can build any-to-any data mappings without writing a single line of code with Astera Centerprise.