Data Services In Frederick MD At NW Database Services

Data Cleaning, Data Cleansing, Data Scrubbing, Deduplication, Data Transformation, NCOA, Mail PreSorts, Email Verification, Email Append, & Phone Append Services in Frederick Maryland

Get The Best Database Services In Frederick Maryland

We provide data services to businesses and organizations in Frederick MD and all Maryland cities. With over 3 decades of experience in the database business, you won’t find a company that can solve your specific database needs with higher quality service or better prices than Northwest Database Services. No matter what your specific need is, our team will find a data service solution to suit your situation.


More Cities and States Where We Offer Data Cleaning Services

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 Frederick MD and surrounding communities.

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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!

7 + 11 =


Sandersville, GA 31082


gch [@]
To use email, remove the brackets


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Information About Data Cleaning And Data Services

What Is Dirty Data?

Dirty data is data that needs to be modified or altered before it can be analysed. There are many types of dirty data. This could pose a problem in your analysis. If you wish to analyse the relationship between these variables, data is needed for customer age and monthly purchase. If you don’t have customer ages, your data is incomplete.
Duplicate data refers to records that appear in the exact same dataset more than once. This can occur when data is merged from different databases or sources.
Inconsistent or inaccurate data – Data that has been out of date, or is prone to structural errors such as typos, inconsistency capitalization, or irregular naming conventions. Let’s suppose you have a set of student test scores. Some students are classified as Pass or Fail while others are classified as P or F. However, the naming convention makes them difficult to differentiate.
Before you can start the analysis phase in data analytics, there are many things to do. Cleansing “dirty” data can take two-thirds of the data analytics process. This refers to data that needs to be edited, worked on, or modified in some other way before it can become available for analysis.
Data analysts might discover outliers in “dirty data” during the cleaning phase. These outliers can be removed completely or used in another way. The question is, “What is an outlier?”

What Is an Outlier?

  • Data analytics defines outliers as values that are significantly different from other data. They can be much larger or smaller. Outliers may indicate a variety in measurements, experimental errors, or a novelty. An example from the real world shows that giraffes are approximately 16 feet tall. Two giraffes stand 9 and 8.5 feet respectively, according to recent discoveries. These two giraffes have been deemed outliers in comparison to the rest.
  • Data analysis results can be affected by outliers. These outliers may cause issues in data analysis results and should be addressed.
    Data analytics should pay special attention to two main reasons why outliers are important:
    Outliers can affect analyses
    Analysts may need to be aware of outliers and their behavior to complete an analysis.

Northwest Database Services has 34+ years experience with all types of data services, including mail presorts, NCOA, and data deduplication. If your database systems are not returning poor data, it is definitely time for you to consult with a data services specialist. We have experience with large and small data sets. Often, data requires extensive manipulation to remove corrupt data and restore the database to proper functionality. Call us at (360)841-8168 for a consultation and get the process of data cleaning started as soon as possible.

NW Database Services
404 Insel Rd
Woodland WA 98674

City of Frederick MD Information

Frederick MD

Frederick is the county seat and city of Frederick County in Maryland, United States. It is located in the Washington-Baltimore mixed statistical area. It is at the intersection of an important north-south Native American Trail and east-west routes to Chesapeake Bay, both in Baltimore and Washington, D. C., and across the Appalachian Mountains to the Ohio River watershed. It is a part of the Washington-Arlington-Alexandria, DC-VA-MD-WV Metropolitan Statistical Area, which is part of a greater Washington-Baltimore-Arlington, DC-MD-VA-WV-PA Combined Statistical Area.


Frederick briefly became Maryland’s capital in 1861 when the legislature moved from Annapolis for the vote on the secession issue. President Lincoln had several members arrested and the assembly could not convene a majority to vote on secession.


This area has hot and humid summers, with cool winters. It is located west of the fall line which means that the city experiences slightly lower temperatures than other locations. According to the Koppen Climate Classification system Frederick has a humid subtropical environment, abbreviated Cfa in climate maps.


According to the 2010 U.S. Census, Frederick had 65,239 residents and approximately 27,000 households. In the ten years following the 2000 census, Frederick city saw a 23.6% increase in population. It is the most populous incorporated area of Maryland with over 50,000 people.


Frederick’s central location has played a significant role in the development of its status as a minor distribution hub for goods and people moving in Western Maryland. This intersection has provided a reliable distribution network for commercial traffic both within and outside the city.

Top Businesses

Frederick’s proximity to Washington, D.C. has been a key factor in the growth of the local economy. Fort Detrick, the largest employer, is also a significant factor. Riverside Research Park is located in Frederick’s East Side. It is a large biomedical research facility. The National Cancer Institute’s Frederick National Laboratory For Cancer Research and Charles River Labs are the tenants. Frederick will see continued growth over the next ten years due to the federal government’s continued and increased investment. Frederick was also affected by recent national trends that focused on the gentrification and rebranding of downtown areas across the country, particularly in the northeast and mid Atlantic.


Frederick MD Map