Data Quality Management and its Best Practices

Data Quality Management and its Best Practices

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Table of content

Introduction to Data Quality

Low-quality data impacts the business process directly.  The presence of duplicate Data is a severe problem in real-life business. For example, suppose you have data of some logistics-related organization in the dataset. Data is connected with products that have to deliver and other data associated with products that have already been delivered. So if there is the same kind of data present in both datasets, it will trouble to deliver the product that is already delivered.

Late updation in data has a negative effect on data analysis as well as in business processes. In the above example, the duplicate data is occurring due to not updating the Data on time.

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What is Data Quality?

Data quality is a measurement of the scope of data for the required purpose. Data quality shows the reliability of a given dataset. The quality of data always impacts the effectiveness and efficiency of any hierarchy. In any order, data acts as a foundation for that. On top of the data, there is information in which data in context. After that, there is the knowledge that gives the actionable information. And at the top, there comes wisdom.

So if you have low-quality data, you will not have adequate information quality. And if there is no useful information quality, you will come up short on the vital information you need in business tasks. High-quality Data is always collected and analyzed using a channel of guidelines that ensure the data's accuracy and consistency.

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Good quality data is essential because it directly impacts business intuitions. This could be organized information sources like Customer, Supplier, Product, and so forth or unstructured information sources like sensors and logs.

Why is Data Quality important?

  • Without the data quality, no one will work with their Business Intelligence Applications because they have an issue with data, and they will not trust the data.
  •  Organizations that successfully render data quality and master data management achieve their goals and success as data is the most valuable resource in this world now.
  • Data quality is significant because, without high-quality data, you can't understand or remain in contact with your customers. In this Data-driven age, it is simpler than at any other time to discover key data about current and possible customers. This data can enable you to showcase all the more successfully.

  1. High-quality Data is likewise a lot simpler to use than low-quality data. Having quality information readily available builds your organization's proficiency too. If your information is not complete, you need to invest vast amounts of energy fixing that information to make it usable. This removes time from different exercises and means it takes more time to implement the insights that data uncovered.
  2. Quality data also helps keep your company’s various departments on a single page so that they can work together more effectively. As in any organization's success, customer relations are crucial, so data quality provides customer relations to the organization.

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What is the architecture of Data Quality?

The data quality architecture comprises the different models, some rules and regulations that supervise which data is collected, how the data is stored and arranged, and used in the organizations. Basically, its role is to make complicated computer database systems that will be useful and secure. It helps in defining the end-use of a database, and then it will create a blueprint for testing, developing, and maintaining the database. Basically, to implement a simple data quality architecture, there are three main components a simple data quality architecture have:

  • Workflow manager
  • Rule’s Intelligence manager
  • Dashboard Manager

The architecture can be implemented with different technologies and tools depending on requirements and what is better for their needs.

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Workflow manager

The first component of the architecture is workflow, which is responsible for the data quality workflow and controls the rules and actions that each user has in a process. Even though you can physically develop the workflow, you should prefer tools like Bizagi, which can start up a workflow automatically situated in a BPMN standard. It encourages a great deal since you can import some BPMN mode you made in the process management tool. You can use any tool that goes with a workflow like Atlassian Jira, which is designed for application

development life cycle management. Jira helps you create and manage customized workflows and has a good cost. But it will be more useful if you use an administration tool like Collibra Data Governance Center; it helps you make and manage the governance operating models in your organization in a scalable and adaptable way.

Rule’s Intelligence manager

Rule’s Intelligence Manager is responsible for changing high-level specifications of data quality rule implemented by Steward in a program code that shows the rule's intelligence kernel. It is also responsible for the generation of data profiling. These tools are the software for data quality, and lots are available in the market. If you haven’t any data quality tool, you can use the ETL tool. All these tools have a module that is a transformation part that behaves like a data quality tool used the moment you transform the data. This module is responsible for cleansing data before sending it to the destination.

Dashboard manager

The dashboard manager is responsible for creating the dashboard with metrics and KPI, letting you observe the data quality development after some time. And don’t forget to introduce one of the most essential KPI data quality attributes (completeness, consistency, accuracy, duplication, integrity). Create a great dashboard and nothing better to do with BI and analytical tools.

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How we can achieve Data Quality?

Data quality is an important feature whenever we ingest the data. Due to the high volume, velocity, and presence of different data kinds, it becomes very challenging to consider it in big data. Wrong data returns false predictions by using machine learning algorithms. Data quality management system based on machine learning requires hours because they can learn with time and find the data anomalies that are not easily discovered. As we have two kinds of data, one is historical data, and the other is real-time data. For maintaining the data quality on both types of data, we have different kinds of software. The data is processed using Apache Griffin and AWS Deequ. Apache Griffin is used for Data Quality solutions. It provides a uniform process to predict the data quality from different ways to build liable data assets and boost confidence for business requirements. 

We have historical data or real-time data. First of all, data scientists define their data quality requirements such as accuracy, completeness, and much more. After that, it will ingest source data into the Apache Griffin computing cluster, and it will kick off the data quality measurements based on the requirements. Finally, it will remove the data quality reports as measurements to the assigned objective. Then these data quality reports are stored in the open TSDB. From there, we can monitor our data quality reports by using the dashboard.

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Attributes of Data Quality

The quality of data depends upon different attribute the data have which are as follow:-

Consistency

Consistency refers to no contradictions in finding the data, no matter where we find the data in the database. The number of metrics should be inconsistent.

Accuracy

The Data you have should be accurate, and the information that contains data should correspond to reality.

Orderliness 

The data should be in the required structure and format. It should follow a proper arrangement order. Imagine if you have a data set, so it should be in standard date format.

Auditability

Data is easily accessible where it is stored in the database, and easily possible to trace the changes that are done.

Completeness

Data probably consist of different numbers of elements as a part. So the interdependent elements that we have in the data have complete information about them so that data can interpret correctly.

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Data Quality Management

Data Quality Management generally refers to the business principles that require the combination of the right people, technologies, and processes, all of which have a common goal of improving the measure of data quality that matters most to a hierarchy. The primary purpose of DQM is to enhance the data and achieve business outcomes that directly depend upon high-quality data. The cures used to forestall data quality issues and inevitable data cleansing includes these orders:-

Data Governance

Data Governance includes what business rules must be stuck to and underpinned by data quality measurement. The information administration system should incorporate the hierarchical structures expected to accomplish the necessary degree of information quality.

Data Profiling

Data profiling is a technique regularly supported by devoted technology, used to understand the data resources associated with data quality management. It is necessary for people who are engaged to be responsible for data quality. Those who are assigned to prevent data quality issues and data cleansing have an in-depth knowledge of data.

Master Data Management

Master Data Management and Data Quality Management are firmly coupled with disciplines. MDM and DQM will be a piece of a similar data administration framework and offers the same role as data owners, data stewards, and data caretakers. Preventing data quality issues in a maintainable manner and not being compelled to dispatch data cleansing activities repeatedly, for most organizations, is an MDM framework that should be set up.

Customer Data Integration 

Not at least customer master data are in many organizations are sourced from self-service registration city, customer relationship management, ERP applications, and perhaps many more. Other than setting up the technical platform for compiling the customer master data from these sources into one source of truth, there is an excellent effort in guaranteeing the data quality of that source of truth. This includes data matching and a supportable method of ensuring the correct data completeness, the best data consistency, and satisfactory data accuracy.

Product Information Management 

As a manufacturer, you just need to adjust your inner information quality with your wholesalers and shippers to make your items stand out so that end clients will choose them as they have a touchpoint in the production network. It ensures the data completeness and other data quality particles inside the item data partnership measures.

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What are Data Quality Best Practices?

As low data quality impacts very severely, it is necessary to learn inadequate data quality remedies. These are the best way that can improve the quality of data.

Data Quality Always Priority

First of all, it always prioritizes data quality. In this step, arrange data quality improvement as a higher priority and ensure every employee understands the difficulties that low-quality data produces. There must be a dashboard to monitor the status of data quality.

Automatically Entry Of Data

As there is manual entry of data by employee or customer is also a reason for low-quality data, so the organizations should work on automatic entry of the Data that reduces the error occurred by manual data entry.

Care For Master Data And Metadata

As the master data is essential, but in front of master data, you should not forget about the metadata. As the timestamps are revealed by metadata without them, organizations cannot control data versions.

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What are the Data Quality Solutions?

There are some top-rated data quality solutions, which are as follow:-

  • IBM Infosphere Information Server
  • Microsoft Data Quality Service
  • SAS Data Quality

IBM Infosphere Information Server

IBM Infosphere Information Server for data quality helps data cleanse and maintain data quality, helping you turn your data into reliable and trusted data. It provides different tools to understand the data and their relationship, analyze the data quality, and maintain data lineage.

Microsoft Data Quality Services

SQL Server Data Quality (DQS) is a very known data quality product that enables you to perform many critical data quality operations that include correction, standardization, and de-duplication of data. DQS helps to perform the data cleansing operation by using cloud-based data services enabled by referred data providers.

SAS Data Quality

Whenever the quality of data increases, the value of analytical results increases. SAS data quality software provides improved consistency and integrity to the data. It supports several data quality operations.

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Data Quality with Deequ

Usually, we write unit tests for our code, but we never test our data, and incorrect data always has an enormous impact on the production system. So for the correct Data, amazon uses an open developed tool Deequ. Deequ provides you the calculation of data quality metrics in a dataset, defining data quality constraints. In this, you do not need to implement and verify the algorithms, and you should only focus on describing how your data is looking.

Deequ at Amazon

Deequ is used internally at amazon to verify the datasets. Data quality constraints can be added or edited by data set producers. The framework registers information quality measurements consistently (with each new form of a dataset), confirms requirements characterized by dataset makers, and distributes datasets to customers in the event of progress.

What is Deequ?

Deequ use the different kind of components which are as follow:-

Metrics Computation

Deequ figures information quality measurements, that is, insights, for example, completeness, maximum, or correlation. For reading from different sources like amazon s3 and for the computation of metrics with an optimized set of aggregation queries, deequ uses the apache spark.

Constraint Verification

As a client, you center around characterizing a bunch of information on quality requirements to be confirmed; Deequ deals with inferring the necessary arrangement of measurements to be registered on the information. Deequ produces an information quality report containing the aftereffect of the required check.

Constraint suggestion

In the deequ, you can decide how to explain your custom information quality requirements or utilize the robotized imperative recommendation strategies that profile the information to surmise practical limitations.

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Conclusion

Poor data quality standards can cloud operational visibility, making regulatory compliance difficult; waste time and labor manually reprocessing faulty data; and presenting a disaggregated picture of data, making it harder to uncover lucrative customer prospects. As businesses are growing at an incredible pace, they mainly rely on data to guide their marketing, product development, and communications strategies, among other things. High-quality data can be handled and analyzed quickly, resulting in more accurate and timely insights that support business intelligence and extensive data analytics efforts.

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