Exhibit 99.1

For Release on February 9, 2012

Teradata Announces 2011 Fourth Quarter and Full-Year Results

ATLANTA – Teradata Corporation (NYSE: TDC) today reported revenue of $673 million for the quarter ended December 31, 2011, an increase of 23 percent from $548 million in 2010. For the full-year 2011, revenue was $2.362 billion, a 22 percent increase from $1.936 billion in 2010. The fourth-quarter revenue comparison was not impacted by currency translation, while the full-year comparison was benefited by 3 percentage points.⁽¹⁾

Stock-based compensation expense and a number of special items (primarily acquisition-related) had a net impact of $46 million on Teradata’s 2011 net income as reported under U.S. Generally Accepted Accounting Principles (GAAP).

Gross margin in the fourth quarter of 55.6 percent was roughly the same as the 55.7 percent reported in the fourth quarter of 2010. On a non-GAAP basis, excluding the special items and stock-based compensation expense described in footnote #2 below,⁽²⁾ fourth-quarter gross margin was 56.5 percent, an improvement from 55.8 percent in the fourth quarter of 2010. The increase in non-GAAP gross margin resulted from a favorable deal mix and leverage from increased product revenue, as well as improved consulting margins as compared to the prior-year period. Gross margin for full year 2011 was 54.7 percent, versus 56.2 percent in 2010. On a non-GAAP basis, excluding the special items described below, 2011 full-year non-GAAP gross margin was 55.9 percent, versus 56.4 percent for the full-year 2010. The decline in non-GAAP gross margin for the full year resulted from a higher mix of consulting revenue.

Teradata reported fourth-quarter net income under GAAP of $98 million, or $0.57 per diluted share, which compared to GAAP net income of $85 million, or $0.50 per diluted share, in the fourth quarter of 2010. For the full year 2011, Teradata reported GAAP net income of $353 million, or $2.05 per diluted share, which compared to GAAP net income of $301 million or $1.77 per diluted share, for the full year 2010. Excluding stock compensation expense and the special items described below, non-GAAP net income in the fourth quarter of 2011 was $113 million, or $0.66 per diluted share, versus $90 million, or $0.53 per diluted share in the fourth quarter of 2010.⁽²⁾ Full-year non-GAAP net income was $399 million, or $2.32 per diluted share in 2011, compared to $317 million, or $1.86 per diluted share in 2010.⁽²⁾

“Teradata finished the year strong, resulting in our best quarter and best year ever. Both the fourth quarter and full-year 2011 were records for the company on a number of metrics including revenue growth rate, non-GAAP product gross margin and operating margin rates which resulted in 25 percent growth in non-GAAP earnings per share for both the quarter and the year. We also added the highest number of new customers for both a quarter and a year,” said Mike Koehler, president and chief executive officer, Teradata Corporation.

“Many corporations have established analytics as a top priority over the past several years. However, faced with today’s accelerating data volumes and new types of data, more corporations are coming to the realization that big data and analytics are much more challenging, and also an opportunity to gain competitive advantage from insights from new data sources such as mobile, sensors, and social networks. Teradata works closely with our customers to provide the optimal data strategy, architecture and technology necessary to manage these challenges, and cost effectively create new insights from all their data to win in the market place.”

Regional Operating Segment Results

Teradata reports its results in three regional operating segments.

Americas

Teradata generated $415 million of revenue in its Americas region in the fourth quarter of 2011, up 22 percent from $341 million in the fourth quarter of 2010. For the full year, revenue in the Americas region increased 23 percent to $1.436 billion in 2011, up from $1.166 billion in 2010. Currency translation had no impact on the quarterly or annual revenue comparisons for the Americas region.⁽¹⁾

Europe, Middle East and Africa (EMEA)

Revenue in Teradata’s EMEA region in the fourth quarter of 2011 was $145 million, up 22 percent from $119 million generated in the fourth quarter of 2010. For the full year 2011, revenue in the EMEA region increased 24 percent to $548 million. Currency translation did not impact the revenue comparison in EMEA for the quarter, but did benefit the annual comparison in EMEA by 6 percentage points.⁽¹⁾

Asia Pacific / Japan (APJ)

Teradata generated $113 million of revenue in its APJ region in the fourth quarter of 2011, a 28 percent increase from $88 million in the fourth quarter of 2010. For the full year 2011, revenue in the APJ region grew 15 percent to $378 million. Currency translation benefited the reported revenue growth in the APJ region by 2 percentage points in the fourth quarter and 7 percentage points for the year. ⁽¹⁾

Operating Income

Fourth-quarter operating income of $133 million increased from $117 million reported in the fourth quarter of 2010. On a non-GAAP basis, fourth quarter operating income of $155 million increased 24 percent from the fourth quarter of 2010.⁽²⁾

Full-year operating income was $456 million in 2011, versus $415 million in 2010. On a non-GAAP basis, full-year operating income was $557 million, a 26 percent increase from $441 million in 2010.⁽²⁾ For both the quarter and full year, higher revenue more than offset the increased investment in selling expense and research and development expense.

Cash Flow

During the fourth quarter of 2011, Teradata generated $126 million of cash from operating activities, compared to $148 million in the prior-year period. Capital expenditures in the fourth quarter totaled $23 million compared to $21 million in the fourth quarter of 2010. Teradata generated $103 million of free cash flow (cash from operations less capital expenditures and additions to capitalized software) ⁽³⁾ in the fourth quarter of 2011, versus $127 million in the same period in 2010.

For the full year, cash from operating activities was $513 million, versus $413 million generated in 2010. Capital expenditures in 2011 totaled $110 million compared to $83 million in 2010. Teradata’s free cash flow for the full year was $403 million, a 22 percent increase from $330 million generated in 2010.⁽³⁾

Balance Sheet

Teradata ended 2011 with $772 million in cash, an $81 million increase from September 30, 2011, and a $111 million decrease from December 31, 2010. During 2011, the company repurchased approximately 2.5 million shares for $127 million.

As of December 31, 2011, Teradata had total debt of $300 million outstanding under a 5-year term loan. Additionally, Teradata has $300 million available through a pre-arranged credit facility; however no funds were drawn from the credit facility.

Share Repurchase Authorization

Teradata’s Board of Directors has approved a new authorization to repurchase a total of $300 million of the company’s shares under its general open market share repurchase program. The program, which was initially established in February 2008 and was set to expire on February 10, 2012, has been extended for an additional three-year period now expiring in February 2015. As of January 31, 2012, the Company had purchased a total of 18.2 million shares of its common stock investing approximately $475 million of the $550 million that was previously authorized under this program.

2012 Outlook

In 2012, Teradata expects revenue to increase approximately 10 to 12 percent from the revenue it generated in 2011. Teradata anticipates that currency translation will negatively impact the year-over-year revenue comparison by approximately 1 percentage point, based on currency rates on January 31, 2012.

GAAP earnings per share in 2012 is expected to be in the $2.27 to $2.37 range. Excluding special items associated with 2011 acquisitions (which include the amortization of acquisition-related intangible assets, estimated purchase accounting adjustments, and transaction and integration costs) as well as stock-based compensation expense, non-GAAP EPS for 2012 is expected to be in the $2.56 to $2.66 range.⁽²⁾

2011 Fourth-Quarter Earnings Conference Call

A conference call is scheduled today at 8:30 a.m. (EST) to discuss the company’s fourth-quarter and full-year 2011 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 achieve 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.

In 2011, a number of special items were included in Teradata’s results reported under GAAP. For the fourth quarter of 2011, Teradata’s non-GAAP results as reported in this release included $6 million of amortization of acquisition-related intangible assets; $4 million of transaction, integration and reorganization costs; $2 million of acquisition-related purchase accounting adjustments; and $10 million of stock-based compensation expense. For the full-year results for 2011, Teradata’s non-GAAP results as reported in this release included $24 million of amortization of acquisition-related intangible assets; $25 million of transaction, integration and reorganization costs; $17 million of acquisition-related purchase accounting adjustments; $28 million of gains on equity investments; and $35 million of stock-based compensation expense. Included in Teradata’s 2010 results was $8 million of stock-based compensation expense in the fourth quarter and $26 million for the full-year.

The following tables reconcile Teradata’s actual and projected results and earnings per diluted share, or 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 to the company’s operating results during the integration period of the acquisitions of Aprimo and Aster Data, (3) provide useful information to management and 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

(d) Earnings Per Share Reconciliation of GAAP to Non-GAAP Measures

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 technology industry and the enterprise 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.

			Schedule A

TERADATA CORPORATION

CONDENSED CONSOLIDATED STATEMENTS OF INCOME

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(in millions, except per share amounts)

			Schedule B

TERADATA CORPORATION

CONDENSED CONSOLIDATED BALANCE SHEETS

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(in millions)

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TERADATA CORPORATION

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

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(in millions)