Data Services In Illinois At NW Database Services

We Provide Data Services Including Data Cleaning In All Illinois Cities

Get The Best Data Cleaning And Database Services

We provide data services, including data cleaning, to businesses and organizations in all state of Illinois cities. With over 34 years of experience in the database business and data services industry, Northwest Database Services can solve your specific database needs with top-quality service and affordable prices. Contact us at (360)841-8168 so we can discuss your data services project and then plan a data project that will meet or exceed your requirements.

Illinois Cities We Serve Include:

Do You Offer Services In All Illinois Cities?

Yes, we do offer our data services  and data cleaning, data cleansing, and data scrubbing in all Illinois cities.

We Are A Full Service Data Services That Can Help You Run Your Business

Northwest Database Services is a full-spectrum data service that has been performing data migration, data scrubbing, data cleaning, and de-duping data services for databases and mailing lists, for over 34 years. NW Database Services provides data services to all businesses, organizations, and agencies in the state of Illinois

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What We Do

Database Services

When you need your data to speak to you regarding your business’s trends, buying patterns or just whether or not your customers are still living.

Data Transformation

We provide data transformation services for Extract, Transform and Load (ETL) operations typically used in data migration or restoration projects.

De-duplication Service

Duplication of data plagues every database and mailing list. Duplication is inevitable, constantly keeps growing and erodes the quality of your data.

Direct Mail - Presorts

It’s true the United States Postal Service throws away approximately thirty five percent of all bulk mail every year! Why so much? Think: “Mailing list cleanup.

Email-Phone Append

With access to more than 500 million email addresses, Northwest Database Services uses one of the most comprehensive and unique data sets in the industry.


Over 40 million Americans change their address annually, which makes us do the work to maintain a high-quality mailing list while you focus on your business.

We Are Here To Help!

14 + 9 =


Sandersville, GA 31082


gch [@]
To use email, remove the brackets


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Information About Data Cleaning

1. Variables in the Source Data

Removing outliers is part of data cleaning, data scrubbing, and data cleansing from NW Database ServicesData discovery is the process of identifying variables that are important in the source data. Then, you will need to determine what pre-processing steps need to be taken to make the data transform.

2. Plan the Data Transformation

You must determine the structure of the source data in order to map it to the landing system. We will convert the JSON data into a tabular format with rows and columns in our example. This step will allow you to decide whether fields should be renamed or dropped.

3. Perform the Data Transformation

Data transformation can be performed using a variety of tools and programming languages. Microsoft Excel, for example, is still a popular tool in data analytics. It has many functions and features that allow you to transform data within Excel. Python and SQL are two popular programming languages when it comes to data transformation. We’ll be using SQL in our example.

4. Analyzing the Data Transformation

After data transformation is complete, you should evaluate the results to ensure that they are accurate. You can use tools to verify that duplicates have been deleted or records have been counted.

3. A Sql Example of How to Transform Data

After we have reviewed the four-step process for transforming data, let’s now apply it to real data. Let’s transform JSON data into tabular using SQL. Over the past 40 years, SQL databases have been the most essential tools for data management. Understanding SQL is therefore crucial in data analytics.

Improved Data Quality

Data transformation pipeline removes duplicates, null value, and outliers. Also, we make sure that the data structure matches the destination system to ensure it can be accessed and queried in the same way. Data transformation does not only include cleaning and restructuring but also includes aggregating and feature-engineering. Data transformation can improve data quality and make modeling data easier.

Better Data Accessibility

Data analytics is difficult because data can’t be stored anywhere else. Data silos are a common problem in organizations. One database could contain customer data, while product event logs and sales data might be stored in another. Data transformation allows you to store all records in one location, in the same format.

Simpler Data Governance

Data can come from many sources, and can be stored in multiple places. This makes managing data difficult. To help organizations track which data is sensitive and regulate them, data transformation can be used. Good metadata makes it easier to manage data.

Material for this article originally appeared on Career Foundry.

Data Services From NW Database Services

Our data services that include data cleaning, data cleansing, and data scrubbing, data deduplication, are all based on the database normalization concept from Edgar Cobb. We have the experience and skills to properly complete your data repair project, getting rid of corrupt data. Contact us at (360)841-8168 for a complimentary consultation so we can determine what data services you require.

NW Database Services
404 Insel Rd
Woodland WA 98674

About Illinois

Illinois Information

Find Out About Illinois

IllinoisIllinois is located in the Midwestern United State. The Chicago metropolitan area and the Metro East section of Greater St. Louis are its largest metropolitan areas. Peoria and Rockford are other major metropolitan areas, as is Springfield, the capital. Illinois is the fifth-largest U.S. state in terms of gross domestic product (GDP), sixth-largest number of residents, and 25th largest land area.


Illinois, which is now Illinois, was once home to many indigenous cultures for thousands of years. This included the Cahokia area’s advanced civilization. French settlers were the first Europeans to arrive in Illinois. They settled near the Mississippi River in 17th century. This was part of the colony of New France. After the U.S. gained independence in 1783, American settlers started arriving from Kentucky via Ohio River. The population grew from the south to the north. The United States’ oldest territory was the Northwest Territory. Illinois became a state in 1818. The Erie Canal facilitated increased commerce in the Great Lakes. Chicago, a small settlement, was one of the most rapidly growing cities in the world. This was due to its position as one of few natural harbors on southwestern Lake Michigan. [8] Illinoisan John Deere invented the self-scouring steel plough, which transformed the rich prairie into some the most productive and valuable farmland in the world. This attracted immigrant farmers from Germany and Sweden. The state became a major transportation hub in the United States thanks to the Illinois and Michigan Canal and its sprawling railroad network.

Major Cities & Towns

Three major geographic divisions exist in Illinois. Northern Illinois is dominated in Chicagoland or the Chicago metropolitan area. This is the area that includes Chicago, its suburbs and the adjacent exurban areas. The federal government defines Chicago as a metropolitan area that includes many counties in Illinois, Indiana and Wisconsin. It has a population exceeding 9.8 million. Chicago is a large, cosmopolitan, urban center, with densely populated residents, a high level of industrialization, the national transportation hub, and a diverse population. Rockford is Illinois’s third largest city, and the center of the fourth-largest metropolitan area. It lies along Interstates 39, 90, approximately 75 miles (121 km) north of Chicago. In 2011, the Quad Cities region was home to 381,342 people. It is located in northern Illinois along the Mississippi River.


Illinois’ climate is very variable throughout the year. Due to the nearly 400-mile distance that separates its northernmost from southernmost extremes, and its mid-continental location, Illinois has a humid continental climate with hot, humid summers. From Carbondale southward, the southern portion of Illinois has a humid subtropical climate. It experiences milder winters and more moderate temperatures. The average annual precipitation in Illinois ranges from less than 48 inches (1,219mm) at its southern tip to 35 inches (889mm) in the northern part of the state. The average annual snowfall in Illinois is 38 in (965mm) in the Chicago region, while the southern part of the state receives less than 14 inches (356mm). The record-breaking temperature was 117 degrees (47 degrees Celsius), which was recorded in July 1954 at East St. Louis. The record-breaking low temperature was -38 degrees (-39 degC), which was recorded at Mount Carroll’s weather station on January 31, 2019. It was confirmed on March 5, 2019, and was recorded during the North American cold wave of January 2019. This was in addition to the January 5, 1999 record of -36 degrees F (-38 degrees Celsius), near Congerville.

Midway through February, temperatures begin to rise with warm days and cool nights. In the desert, temperatures can reach 125 degrees (52 degC) during the summer months. Arizona’s record high temperature is 128 degrees Celsius (53 degrees C) which was set at Lake Havasu City in June 1994 and July 2005. The record low temperature of -40 degrees Celsius was recorded at Hawley Lake in January 1971.


According to the United States Census Bureau, Illinois’ population was 12,812,508 as of the 2020 United States Census. This makes it the sixth-largest US state and the fifth-largest (losing to Pennsylvania). The Illinois population declined slightly in 2020 compared to the 2010 United States Census by just over 18,000 people. However, the overall population was much higher than the most recent census estimates.


Illinois is home to a diverse economy. It has the world-famous city of Chicago in its northeast, as well as major industrial and agricultural centers in the north and south. There are also natural resources like coal, timber, petroleum, and petroleum in it’s south. The state’s central location and favorable geography make it a major transport hub. The Port of Chicago has direct access to the Atlantic Ocean via the Great Lakes, Saint Lawrence Seaway, and the Gulf of Mexico via the Mississippi Riverviathe Illinois Waterway. The state also includes parts of the Mississippi, Ohio and Wabash Rivers. For decades, Chicago’s O’Hare International Airport was one of the ten busiest airports in the world. Illinois has been considered a microcosm in the United States, and a bellwetherin American culture. This is exemplified by “Will it play” in Peoria.

Material for information about Illinois first appeared in Wikipedia


Illinois Map