Informatica’s revenue is in. Hortonworks joins OpenStack. And more.

For 451 clients: Jitterbit gives integration stack makeover, continues to mine salesforce.com bit.ly/VJrwPE By Krishna Roy

— Matt Aslett (@maslett) January 28, 2013

For 451 clients: Enterprise cloud provider Skytap offers new service based on Cloudera Hadoop bit.ly/UpnXij By @rachelchalmers

— Matt Aslett (@maslett) January 25, 2013

For 451 clients: Alteryx plots course for 2013 as it seeks to bring business users into the analytic mix bit.ly/Upo3GE By Krishna Roy

— Matt Aslett (@maslett) January 25, 2013

For 451 Research clients: 2013 M&A Outlook – Software bit.ly/UpnTz2

— Matt Aslett (@maslett) January 25, 2013

Informatica Reports Annual Revenues of $811.6m. bit.ly/UpoSPJ

— Matt Aslett (@maslett) January 25, 2013

Hortonworks Joins OpenStack Foundation shar.es/CJ7Z8 #hortonworks #openstack #hadoop

— Hortonworks (@hortonworks) January 28, 2013

Fedora Linux considering switching out MySQL for MariaDB zd.net/VJs0VU

— Matt Aslett (@maslett) January 28, 2013

2013: What’s Coming Next in Neo4j bit.ly/VJrTcJ

— Matt Aslett (@maslett) January 28, 2013

Microsoft’s data-platform chief is moving on zdnet.com/microsofts-dat…

— Matt Aslett (@maslett) January 28, 2013

Guavus Partners With Teradata to Offer Advanced Analytics for Communications Service Providers mwne.ws/WsNZSy

— Matt Aslett (@maslett) January 28, 2013

10gen’s commercial customer count rose to more than 500 in 2012. mwne.ws/WsO9JN

— Matt Aslett (@maslett) January 28, 2013

Cloudant Reports Tenfold Increase in 2012 Monthly Recurring DBaaS Revenue prn.to/WsOvzS

— Matt Aslett (@maslett) January 28, 2013

And that’s the Data Day, today.

Splunk files for IPO. Oracle updates its price list. And more.

An occasional series of data-related news, views and links posts on Too Much Information. You can also follow the series @thedataday.

* Splunk Inc. Files Registration Statement for an Initial Public Offering And here it is.

* Oracle updated its Engineered System price list.

* Comparing Hadoop Appliances Great post from Pythian’s Gwen Shapira.

* What is big data? Edd Dumbill provides an introduction to the big data landscape.

* Why Couchbase? Damien Katz clarifies the reasons behind his preference for Couchbase over Apache CouchDB.

* Jaspersoft First to Develop Business Intelligence for Platform-as-a-Service BI suite now available with Red Hat OpenShift.

* Birst and ParAccel Partner to Deliver Scalable and Agile Big Data Analytics in the Cloud. Leverage.

* Recommind Names 451 Research Cofounder Nick Patience Director of Product Marketing and Strategy Our loss is Recommind’s gain.

* Oracle Unveils Oracle TimesTen In-Memory Database 11g Release 2 Performance and scalability improvements.

* Walkie Talkie App Voxer Soars Past a Billion Operations per Day powered by Basho Riak 10-4 good buddy.

* ISYS Search to Provide Enhanced Text Data Extraction Capabilities for New Generation of SAP Solutions OEM deal.

* Using SQLFire as a read-only cache for MySQL. VMware explains why and how.

* Announcing MySQL Enterprise Backup 3.7.0 Self-explanatory.

* Tableau Software Doubles Sales in 2011, Announces Massive Growth in Customer Roster Worldwide Customer base up by 40 percent in 2011.

* VoltDB Completes 2011 With Significant Market Growth and Company Expansion Including growth in new customer accounts of more than 300%.

* Clarabridge Wins Record Number of New Clients in 2011 More than 60 new Clarabridge Enterprise customers and more than 700 new Clarabridge Professional customers.

* For 451 Research clients

# Oracle selects Cloudera for Hadoop-based Big Data Appliance Market development report

# Microsoft may offer ‘big security data’ for free Analyst note

# Zimory considering virtual independence for cloud database business Market development report

# Jitterbit sheds light on growth strategy, integration business under new CEO Market development report

# SnapLogic snaps into the enterprise, shifts gaze away from midmarket integration Market development report

* Google News Search outlier of the day: My Best Friend’s Hair Launches Nationwide Website to Help You Find the Perfect Hairstylist

And that’s the Data Day, today.