Exhibit 99.1

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

For Release on November 4, 2010

Teradata Announces 2010 Third Quarter Results

Increases 2010 Full-Year Revenue and EPS Guidance

• Revenue increased 15 percent from the third quarter of 2009, 15 percent in constant currency⁽¹⁾

• Operating margin of 21.7 percent, versus 20.7 percent in the third quarter of 2009

• GAAP EPS of $0.44, versus $ 0.36 in the third quarter of 2009, a 22 percent increase

• Non-GAAP EPS of $0.46, versus $0.40 in the third quarter of 2009⁽²⁾

• Increasing guidance for FY revenue growth to approximately 12%, from prior 8-10% range.

• Raising GAAP EPS guidance from $1.60 - $1.70 to $1.71 -1.74

• Increasing non-GAAP EPS guidance from $1.69 - $1.79 to $1.80 - $1.83⁽²⁾

ATLANTA – Teradata Corporation (NYSE: TDC), the world’s largest company solely focused on data warehousing and enterprise analytics, today reported revenue of $489 million for the quarter ended September 30, 2010, an increase of 15 percent from $425 million in 2009.Overall, the company’s third quarter year-over-year revenue comparison was not impacted by currency translation, when compared to the third quarter of 2009.⁽¹⁾

Gross margin in the third quarter was 57.1 percent versus 53.4 percent in the third quarter of 2009. Higher product gross margin and a more favorable mix of product revenue versus service revenue more than offset lower service gross margin in the quarter.

Teradata reported third-quarter net income under Generally Accepted Accounting Principles (GAAP) of $75 million, or $0.44 per diluted share, which compared to GAAP net income of $63 million, or $0.36 per diluted share, in the third quarter of 2009. Non-GAAP net income per diluted share (EPS), which excludes non-cash, stock-based compensation expense and an impairment charge in the third quarter of 2009, was $0.46 in the third quarter of 2010, versus $0.40 in the third quarter of 2009.⁽²⁾

“Teradata delivered another strong quarter in terms of revenue and operating income growth, and we’ve raised our guidance for the full year,” said Mike Koehler, president and chief executive officer of Teradata Corporation.

“Our increased investments in market coverage, research and development, and our data warehouse platform family over the past couple of years - have allowed Teradata to go broader and deeper into the market to help fuel growth.

“In addition, the explosion of new and big data, and the need to integrate it with traditional data for best-in-class analytics, will benefit Teradata and our customers going forward.”

Regional Operating Segment Results

Teradata reports its results in three regional operating segments.

Americas

Teradata generated $292 million of revenue in its Americas region in the third quarter of 2010, up 18 percent from $247 million in the third quarter of 2009. The year-over-year revenue comparison for the Americas region was not materially impacted by currency translation.⁽¹⁾

Gross margin in the Americas region in the third quarter of 2010 improved to 61.6 percent, compared to 55.9 percent in the third quarter of 2009. Gross margin in the quarter improved largely due to higher product gross margin, as well as a higher mix of product revenue versus services revenue, compared to the prior-year period.

Europe, Middle East and Africa (EMEA)

Revenue in Teradata’s EMEA region in the third quarter of 2010 was $109 million, the same as reported in the third quarter of 2009. Currency translation negatively impacted the revenue comparison in the EMEA region by 7 percentage points.⁽¹⁾

Gross margin in the EMEA region in the third quarter of 2010 was 51.4 percent, down from 53.2 percent in the third quarter of 2009, due to lower services margins, which were offset somewhat by higher product margins.

Asia Pacific / Japan (APJ)

Teradata generated $88 million of revenue in its APJ region in the third quarter of 2010, a 28 percent increase from $69 million in the third quarter of 2009. The revenue comparison in the APJ region was benefited by 9 percentage points from currency translation.⁽¹⁾

Gross margin in the APJ region in the third quarter of 2010 was 48.9 percent, up from 44.9 percent in the third quarter of 2009. The increase was driven by higher product margins and a greater proportion of product revenue (compared to services revenue), offset in part by lower consulting services margins.

Operating Income

Third-quarter operating income of $106 million improved from $88 million reported in the third quarter of 2009. The increase in operating income was largely due to revenue growth, particularly product revenue, and improved product margins, offset by lower service margins as well as higher research and development and selling expenses.

Operating margin in the third quarter of 2010 was 21.7 percent, versus 20.7 percent in the third quarter of 2009.

Other Items

The effective income tax rate in the third quarter of 2010 was 29 percent, which compared to a 25 percent tax rate in the prior-year period, driven by an overall proportional increase in U.S. pre-tax earnings.

Teradata expects a higher proportion of its pre-tax income will be generated in the United States in 2010 as compared to 2009; as a result, we are anticipating the full-year effective tax rate to be approximately 27%. If the U.S. Federal Research & Development Tax Credit is not retroactively reinstated by Congress before year end, Teradata’s full-year effective tax rate for 2010 would increase to approximately 28%.

Cash Flow

During the third quarter of 2010, Teradata generated $65 million of cash from operating activities, compared to $96 million in the prior-year period. Capital expenditures in the third quarter were $18 million compared to $21 million in the third quarter of 2009. Teradata generated $47 million of free cash flow (cash from operations less capital expenditures for

property and equipment and additions to capitalized software) in the third quarter of 2010, versus generating $75 million in the same period in 2009. ⁽³⁾ In comparison to the prior-year period, the decrease in cash provided by operating activities was principally due to an increase in receivables, in large part due to higher revenue and timing of transactions in the third quarter of 2010.

During the first nine months of 2010, Teradata generated $265 million of cash from operating activities, compared to $364 million in the prior-year period. Capital expenditures in the first nine months of 2010 were $62 million, compared to $61 million in the same period in 2009. During the first three quarters of 2010, Teradata generated $203 million of free cash flow, versus $303 million in the same period in 2009.

	For the Periods Ended September 30 (in millions)
	Three Months						Nine Months
	2010			2009			2010			2009
Net Income (GAAP)	$	75		$	63		$	216		$	170
Cash provided by operating activities (GAAP)	$	65		$	96		$	265		$	364
Less capital expenditures for:
Expenditures for property and equipment		(8	)		(5	)		(25	)		(18	)
Additions to capitalized software		(10	)		(16	)		(37	)		(43	)
Total capital expenditures		(18	)		(21	)		(62	)		(61	)
Free Cash Flow (non-GAAP measure) (3)	$	47		$	75		$	203		$	303

Balance Sheet

Teradata ended the third quarter of 2010 with $741 million in cash and short-term investments, a $17 million increase from June 30, 2010. During the quarter Teradata used approximately $29 million for technology investments and $17 million to repurchase approximately 559,000 shares of its stock. Although Teradata has $300 million of funds available through a pre-arranged credit facility, there was no short- or long-term debt outstanding as of September 30, 2010.

2010 Outlook

Teradata is increasing its guidance for full-year 2010 revenue growth to approximately 12 percent from its prior guidance for the “high-end” of the 8-10 percent range. Currency is expected to benefit the full-year, year-over-year revenue comparison by approximately 1 percent.

GAAP EPS for 2010 is now expected to be in the $1.71 to $1.74 range, up from the prior range of $1.60 to $1.70. Excluding non-cash, stock-based compensation expense for the year, non-GAAP EPS is now expected to be in the $1.80 to $1.83 range, an increase from the prior non-GAAP EPS range of $1.69 to $1.79.⁽²⁾

2010 Third-Quarter Earnings Conference Call

A conference call is scheduled today at 8:30 a.m. (EST) to discuss the company’s third-quarter 2010 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 www.teradata.com/investor.

About Teradata

Teradata Corporation (NYSE: TDC) is the world’s largest company solely focused on raising intelligence and achieving enterprise agility through its database software, enterprise data warehousing, data warehouse appliances, consulting, and enterprise analytics. Visit Teradata on the web at www.teradata.com.

# # #

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

1. The impact of currency is determined by calculating the prior period results using the current-year monthly average currency rates. See the foreign currency schedule on the Investor Relations page of the company’s web site www.teradata.com/investor.

	For the Periods Ended September 30 (in millions)
	Three Months										Nine Months
	2010		2009		% Chg As Rept’d			% Chg CC			2010		2009		% Chg As Rept’d			% Chg CC
Revenue
Products (software/hardware)	$	243	$	191		27	%		28	%	$	666	$	533		25	%		24	%
Consulting services		131		124		6	%		6	%		380		357		6	%		5	%
Maintenance services		115		110		5	%		4	%		342		323		6	%		4	%
Total services		246		234		5	%		5	%		722		680		6	%		4	%
Total revenue	$	489	$	425		15	%		15	%	$	1,388	$	1,213		14	%		13	%
	2010		2009		% Chg As Rept’d			% Chg CC			2010		2009		% Chg As Rept’d			% Chg CC
By segment/region
Americas region	$	292	$	247		18	%		18	%	$	825	$	681		21	%		20	%
EMEA region		109		109		0	%		7	%		323		324		0	%		2	%
APJ region		88		69		28	%		19	%		240		208		15	%		7	%
Total revenue	$	489	$	425		15	%		15	%	$	1,388	$	1,213		14	%		13	%

2. Teradata reports its results in accordance with Generally Accepted Accounting Principles in the United States, or GAAP. However, as described below, the company believes that certain non-GAAP measures (such as free cash flow and non-GAAP EPS which excludes certain items) are useful for investors. Our non-GAAP measures are not meant to be considered in isolation or as substitutes for, or superior to, results determined in accordance with GAAP, and should be read only in conjunction with our condensed consolidated financial statements prepared in accordance with GAAP.

The following table reconciles Teradata’s actual and projected earnings per diluted share, or EPS, under GAAP to the company’s actual and projected non-GAAP EPS for the periods presented, which exclude certain items. Our management regularly uses supplemental non-GAAP financial measures such as EPS excluding certain items, internally, to understand, manage and evaluate our business and make operating decisions. The company believes such non-GAAP financial measures provide useful information to investors regarding the underlying business trends and performance of the company’s ongoing operations and are useful for period-over-period comparisons of such operations and results. The company also believes this information is useful for investors because it can provide consistency and comparability with past reports and projections of future results.

	Q3 2010		Q3 2009		2010 Guidance
Reconciliation of GAAP to Non-GAAP Measures:
Diluted Earnings Per Share (GAAP)	$	0.44	$	0.36	$	1.71 - $1.74
Excluding:
Stock-based compensation expense	$	0.02	$	0.02	$	0.09
Impairment charge			$	0.02
Adjusted Diluted Earnings Per Share (Non-GAAP)	$	0.46	$	0.40	$	1.80 - $1.83

3. As described above, the company believes that free cash flow is a useful non-GAAP measure for investors. Teradata defines free cash flow as cash provided/used by operating activities less capital expenditures for property and equipment, and additions to capitalized software. Free cash flow does not have a uniform definition under GAAP and therefore, Teradata’s definition may differ from other companies’ definitions of this measure. Teradata’s management uses free cash flow to assess the financial performance of the company and believes it is useful for investors because it relates the operating cash flow of the company to the capital that is spent to continue and improve business operations. In particular, free cash flow indicates the amount of cash generated after capital expenditures for, among other things, investment in the company’s existing businesses, strategic acquisitions, strengthening the company’s balance sheet, repurchase of company stock and repayment of the company’s debt obligations, if any. Free cash flow does not represent the residual cash flow available for discretionary expenditures since there may be other nondiscretionary expenditures that are not deducted from the measure. This non-GAAP measure is not meant to be considered in isolation or as a substitute for, or superior to, results determined in accordance with GAAP, and should be read only in conjunction with our condensed consolidated financial statements prepared in accordance with GAAP.

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; 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

(Unaudited)

(in millions, except per share amounts)

	For the Period Ended September 30
	Three Months									Nine Months
	2010			2009			% Chg			2010			2009			% Chg
Revenue
Products	$	243		$	191			27	%	$	666		$	533			25	%
Services		246			234			5	%		722			680			6	%
Total revenue		489			425			15	%		1,388			1,213			14	%
Product gross margin		171			119						451			341
% of Revenue		70.4	%		62.3	%					67.7	%		64.0	%
Services gross margin		108			108						332			319
% of Revenue		43.9	%		46.2	%					46.0	%		46.9	%
Total gross margin		279			227						783			660
% of Revenue		57.1	%		53.4	%					56.4	%		54.4	%
Selling, general and administrative expenses		133			113						377			345
Research and development expenses		40			26						108			83
Income from operations		106			88						298			232
% of Revenue		21.7	%		20.7	%					21.5	%		19.1	%
Other expense, net		—			(4	)					—			(4	)
Income before income taxes		106			84						298			228
% of Revenue		21.7	%		19.8	%					21.5	%		18.8	%
Income tax expense		31			21						82			58
% Tax rate		29	%		25	%					28	%		25	%
Net income	$	75		$	63					$	216		$	170
% of Revenue		15.3	%		14.8	%					15.6	%		14.0	%
Net income per common share
Basic	$	0.45		$	0.37					$	1.29		$	0.99
Diluted	$	0.44		$	0.36					$	1.27		$	0.98
Weighted average common shares outstanding
Basic		167.2			171.7						167.3			172.4
Diluted		170.1			174.1						170.1			174.1

Schedule B

TERADATA CORPORATION

CONDENSED CONSOLIDATED BALANCE SHEETS

(Unaudited)

(in millions)

	September 30, 2010			June 30, 2010			December 31, 2009			September 30, 2009
Assets
Current assets
Cash and cash equivalents	$	741		$	724		$	661		$	704
Accounts receivable, net		411			381			387			326
Inventories		65			46			47			46
Other current assets		55			57			57			71
Total current assets		1,272			1,208			1,152			1,147
Property and equipment, net		103			101			95			90
Capitalized software, net		114			113			102			97
Goodwill		136			135			109			110
Deferred income taxes		69			74			84			81
Other assets		61			31			27			14
Total assets	$	1,755		$	1,662		$	1,569		$	1,539
Liabilities and stockholders’ equity
Current liabilities
Accounts payable	$	88		$	82		$	102		$	81
Payroll and benefits liabilities		124			94			109			96
Deferred revenue		265			307			256			265
Other current liabilities		73			60			76			71
Total current liabilities		550			543			543			513
Pension and other postemployment plan liabilities		85			79			83			82
Other liabilities		36			34			33			29
Total liabilities		671			656			659			624
Stockholders’ equity
Preferred stock		—			—			—			—
Common stock		2			2			2			2
Paid-in capital		663			646			622			606
Treasury Stock		(399	)		(382	)		(311	)		(210	)
Retained earnings		800			725			583			499
Accumulated other comprehensive income		18			15			14			18
Total stockholders’ equity		1,084			1,006			910			915
Total liabilities and stockholders’ equity	$	1,755		$	1,662		$	1,569		$	1,539

Schedule C

TERADATA CORPORATION

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(Unaudited)

(in millions)

	For the Period Ended September 30
	Three Months						Nine Months
	2010			2009			2010			2009
Operating activities
Net income	$	75		$	63		$	216		$	170
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization		15			19			43			46
Stock-based compensation expense		7			6			18			17
Excess tax benefit from stock-based compensation		(1	)		(1	)		(3	)		(2	)
Deferred income taxes		5			7			16			23
Impairment on equity investment		—			5			—			5
Changes in assets and liabilities:
Receivables		(29	)		16			(24	)		121
Inventories		(17	)		(1	)		(18	)		(1	)
Current payables and accrued expenses		36			17			(7	)		(16	)
Deferred revenue		(41	)		(35	)		11			7
Other assets and liabilities		15			—			13			(6	)
Net cash provided by operating activities		65			96			265			364
Investing activities
Proceeds from sales and maturities of short-term investments		—			—			—			65
Purchases of short-term investments		—			—			—			(25	)
Expenditures for property and equipment		(8	)		(5	)		(25	)		(18	)
Additions to capitalized software		(10	)		(16	)		(37	)		(43	)
Other investing activities and business acquisitions, net		(29	)		—			(61	)		6
Net cash used in investing activities		(47	)		(21	)		(123	)		(15	)
Financing activities
Repurchases of common stock		(17	)		(21	)		(88	)		(71	)
Excess tax benefit from stock-based compensation		1			1			3			2
Other financing activities, net		9			6			21			14
Net cash used in financing activities		(7	)		(14	)		(64	)		(55	)
Effect of exchange rate changes on cash and cash equivalents		6			5			2			8
Increase in cash and cash equivalents		17			66			80			302
Cash and cash equivalents at beginning of period		724			638			661			402
Cash and cash equivalents at end of period	$	741		$	704		$	741		$	704

Schedule D

TERADATA CORPORATION

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

(Unaudited)

(in millions)

	For the Period Ended September 30
	Three Months												Nine Months
	2010			2009			% Change As Reported			% Change Constant Currency			2010			2009			% Change As Reported			% Change Constant Currency
Revenue
Americas	$	292		$	247			18	%		18	%	$	825		$	681			21	%		20	%
EMEA		109			109			0	%		7	%		323			324			0	%		2	%
APJ		88			69			28	%		19	%		240			208			15	%		7	%
Total revenue		489			425			15	%		15	%		1,388			1,213			14	%		13	%
Segment gross margin
Americas		180			138									497			388
% of Revenue		61.6	%		55.9	%								60.2	%		57.0	%
EMEA		56			58									170			175
% of Revenue		51.4	%		53.2	%								52.6	%		54.0	%
APJ		43			31									116			97
% of Revenue		48.9	%		44.9	%								48.3	%		46.6	%
Total gross margin		279			227									783			660
% of Revenue		57.1	%		53.4	%								56.4	%		54.4	%
Selling, general and administrative expenses		133			113									377			345
Research and development expenses		40			26									108			83
Income from operations	$	106		$	88								$	298		$	232
% of Revenue		21.7	%		20.7	%								21.5	%		19.1	%