Exhibit 99.1

		11695 Johns Creek Pkwy. Johns Creek, GA 30097   NEWS RELEASE
For media information:   Mike O’Sullivan (937) 242-4786 mike.osullivan@teradata.com		For investor information:   Gregg Swearingen (937) 242-4600 gregg.swearingen@teradata.com

For Release on May 2, 2013

Teradata Reports 2013 First Quarter Results

ATLANTA – Teradata Corporation (NYSE: TDC) today reported revenue of $587 million for the quarter ended March 31, 2013, a decrease of 4 percent from $613 million in the first quarter of 2012. Revenue in the first quarter decreased 3 percent when compared in constant currency.⁽¹⁾

Gross margin was 52.0 percent, as reported under U.S. Generally Accepted Accounting Principles (GAAP), versus 55.1 percent in the first quarter of 2012. On a non-GAAP basis, excluding stock-based compensation expense and the other special items described in footnote #2, gross margin was 53.3 percent, down from the 55.9 percent gross margin in the first quarter of 2012.⁽²⁾

Teradata reported first quarter GAAP net income of $59 million, or $0.35 per diluted share, which compared to GAAP net income of $91 million, or $0.53 per diluted share, in the first quarter of 2012. Stock-based compensation expense and other special items reduced Teradata’s first quarter net income by $14 million (or 8 cents of EPS) as reported under GAAP.⁽²⁾ Excluding stock-based compensation expense and the other special items detailed in footnote #2, non-GAAP net income in the first quarter of 2013 was $73 million, or $0.43 per diluted share, versus $103 million, or $0.60 per diluted share, in the first quarter of 2012.⁽²⁾

“As we expected, Teradata got off to a slow start in the first quarter of 2013. Although we continue to see softness in large capital purchases, we continue to have strong market momentum with our Aster Big Data Analytics and Integrated Marketing solutions as well as our Unified Data Architecture which helps organizations drive value from all of their data,” said Mike Koehler, president and chief executive officer, Teradata Corporation. “In 2013, we will continue to increase our investments in research and development and market coverage in order to further advance our leadership positions and grow our revenues in Data Warehousing, Big Data Analytics, and Integrated Marketing Management in the years to come.”

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Regional Revenue Performance

Operating Income

First quarter operating income of $76 million was down from $127 million reported in the first quarter of 2012. On a non-GAAP basis, operating income was $104 million versus $147 million in the first quarter of 2012.⁽²⁾ The decline was primarily due to lower revenue volume, unfavorable revenue mix as well as increased investment in sales resources and research and development.

Cash Flow

During the first quarter of 2013, Teradata generated $243 million of cash from operating activities, compared to $192 million in the prior-year period. The increase was driven by the collection of seasonally high accounts receivables balance as of December 31, 2012. Teradata generated $216 million of free cash flow (cash from operating activities less capital expenditures and additions to capitalized software)⁽³⁾ in the first quarter of 2013, versus $162 million in the same period in 2012.

Balance Sheet

Teradata ended the quarter with $853 million in cash, a $124 million increase from December 31, 2012. The overall increase in cash in the first quarter was somewhat offset by Teradata’s purchase of 1.6 million shares of its stock for approximately $94 million during the quarter. Year to-date, through April 30, Teradata purchased 2.7 million shares for approximately $155 million.

As of March 31, 2013, Teradata had total debt of $285 million outstanding under a term loan. Additionally, Teradata has $300 million available through a pre-arranged credit facility; however, no funds were drawn from the credit facility.

2013 Outlook

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Teradata now expects revenue growth for the full-year 2013 to be at the lower end of its prior revenue growth rate guidance of 6 to 10 percent, when measured in constant currency.⁽¹⁾ Based on currency rates at the end of April, 2013, Teradata now anticipates currency translation to reduce its year-over-year revenue comparison by approximately 1 percent. Teradata also now expects earnings per share for the full-year 2013 to be at the lower end of its prior guidance ranges of $2.64-$2.79 on a GAAP basis and $3.05-$3.20 on a non-GAAP basis, excluding stock-based compensation expense and other special items.⁽²⁾

2013 First Quarter Earnings Conference Call

A conference call is scheduled today at 4:30 p.m. (ET) to discuss the company’s first quarter 2013 results. Access to the conference call, as well as a replay of the call, is available on Teradata’s web site at www.teradata.com/investor.

Supplemental financial information regarding Teradata’s operating results is also available on the Investor Relations page of Teradata’s web site.

About Teradata

Teradata Corporation (NYSE: TDC) is the world’s leading analytic data solutions company, focused on integrated data warehousing, big data analytics, and business applications. Teradata’s innovative products and services deliver data integration and business insight to empower organizations to make the best decisions possible for competitive advantage. Visit teradata.com for details.

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Teradata is a trademark or registered trademark of Teradata Corporation in the United States and other countries.

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Special items included in Teradata’s 2013 first quarter GAAP operating income results as reported in this release included $13 million of stock-based compensation expense; $12 million of amortization of acquisition-related intangible assets; and $3 million of acquisition transaction and integration expenses.

In addition to the special items included in Teradata’s 2013 first quarter GAAP operating income, Teradata’s GAAP net income also included a $4 million income tax benefit related to the 2012 U.S. Research & Development tax credit. This benefit was included in Teradata’s non-GAAP results in the fourth quarter of 2012, since the benefit related to the 2012 tax reporting period. However, Teradata could not include the tax benefit in its GAAP results in the fourth quarter of 2012 due to the American Taxpayer Relief Act of 2012 not being enacted until January 2013. As a result, the $4 million tax benefit is included in Teradata’s first quarter 2013 GAAP net income, but excluded from the company’s non-GAAP net income.

The following tables reconcile Teradata’s actual and projected results and EPS, under GAAP to the company’s actual and projected non-GAAP results and EPS for the periods presented, which exclude certain items. Our management regularly uses supplemental non-GAAP financial measures, such as gross margin, operating income, net income and EPS, excluding certain items internally, to understand, manage and evaluate our business and support operating decisions. The company believes such non-GAAP financial measures (1) provide useful information to investors regarding the underlying business trends and performance of the company’s ongoing operations, (2) are useful for period-over-period comparisons of such operations and results, that may be more easily compared to peer companies and allow investors a view of the company’s operating results excluding special items, (3) provide useful information to management and

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investors regarding present and future business trends, and (4) provide consistency and comparability with past reports and projections of future results.

(a) Gross Margin Reconciliation of GAAP to Non-GAAP Measures

(b) Operating Income Reconciliation of GAAP to Non-GAAP Measures

(c) Net Income Reconciliation of GAAP to Non-GAAP Measures

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Note to Investors

This news release contains forward-looking statements, including statements as to anticipated or expected results, beliefs, opinions and future financial performance, within the meaning of Section 21E of the Securities and Exchange Act of 1934. Forward-looking statements include projections of revenue, profit growth and other financial items, future economic performance and statements concerning analysts’ earnings estimates, among other things. These forward-looking statements are based on current expectations and assumptions and involve risks and uncertainties that could cause Teradata’s actual results to differ materially. In addition to the factors discussed in this release, other risks and uncertainties could affect our future results, and could cause actual results to differ materially from those expressed in such forward-looking statements. Such factors include those relating to: the global economic environment in general or on the ability of our suppliers to meet their commitments to us, or the timing of purchases by our current and potential customers, and other general economic and business conditions; the rapidly changing and intensely competitive nature of the information

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technology industry and the data warehousing business, including the increased pressure on price/performance for data warehousing solutions; fluctuations in our operating results, unanticipated delays or accelerations in our sales cycles and the difficulty of accurately estimating revenues; risks inherent in operating in foreign countries, including the impact of economic, political, legal, regulatory, compliance, cultural, foreign currency fluctuations and other conditions abroad; the timely and successful development, production or acquisition and market acceptance of new and existing products and services, including our ability to accelerate market acceptance of new products and services as well as the reliability, quality and operability of new products because of the difficulty and complexity associated with their testing and production; tax rates; turnover of workforce and the ability to attract and retain skilled employees; availability and successful exploitation of new acquisition and alliance opportunities; our ability to execute integration plans for newly acquired entities, including the possibility that expected synergies and operating efficiencies may not be achieved, that such integration efforts may be more difficult, time-consuming or costly than expected, and that operating costs, customer loss and business disruption (including, without limitation, difficulties in maintaining relationships with employees, customers, clients or suppliers) may be greater than expected following the transaction; recurring revenue may decline or fail to be renewed; changes in Generally Accepted Accounting Principles (GAAP) and the resulting impact, if any, on the company’s accounting policies; continued efforts to establish and maintain best-in-class internal information technology and control systems; and other factors described from time-to-time in the company’s filings with the U.S. Securities and Exchange Commission, including its annual report on Form 10-K and subsequent quarterly reports on Forms 10-Q, as well as the company’s annual reports to stockholders. The company does not undertake any obligation to publicly update or revise any forward-looking statements, whether as a result of new information, future events or otherwise.

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TERADATA CORPORATION

CONDENSED CONSOLIDATED STATEMENTS OF INCOME

(Unaudited)

(in millions, except per share amounts)

TERADATA CORPORATION

CONDENSED CONSOLIDATED BALANCE SHEETS

(Unaudited)

(in millions)

TERADATA CORPORATION

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(Unaudited)

(in millions)

TERADATA CORPORATION

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

(Unaudited)

(in millions)