About Sigma Data Systems, Inc.   Since 1978, Sigma Data Systems, Inc. has partnered with businesses large and small to provide cost effective information systems design, programming, installation and support services. Our success is founded on independence of recommendation, depth of technical expertise, general business acumen and a strong commitment to our business partners. We have satisfied clients in many industries including: Banking Construction Retail Financial Services Distribution Manufacturing Insurance Medical Services Our experienced professionals know legacy systems and today’s technology. Browse this web site for more information, then e-mail us via the contact page. You and your systems users will be glad you did.