OLAP and Hadoop: A Great Pairing
OLAP continues to be a relevant and exciting technology, most recently in pairing OLAP and Hadoop. As we are OLAP.com, we have ALWAYS seen the value of OLAP technology. We admit OLAP has been a bit out of style the last few years. Some companies even run Google ads about how “OLAP is obsolete,” but nothing could be further from the truth. (Check out our blog on that one.)
We see this in the fashion industry all the time: what is old is new again! This is rare in the technology realm, but it seems to be the case with OLAP. As developers struggle to get value out of Hadoop data, they discovered they needed the speed and flexibility of OLAP. OLAP and Hadoop is a powerful combination for getting to the ultimate goal of extracting value from Big Data.
Bringing OLAP to scale for Big Data
In an article from ZDNet, Is this the age of Big OLAP? Andrew Brust writes about the new relationship between OLAP and Hadoop. He highlights that OLAP technology can be particularly beneficial when working with extremely large Big Data sets. Typically, OLAP has not been scalable enough for Big Data solutions. But OLAP technology continues to progress, we find this new application of OLAP exciting. Brust discusses a few strategies for bringing the two technologies together. He mentions a few OLAP vendors in detail and how they manage the issue of scalability for OLAP software.
If you want to try using OLAP with Hadoop, perhaps you want to give PowerOLAP, the mature OLAP product of OLAP.com, a try? There is a free version of PowerOLAP available. If you plan to test PowerOLAP with your Hadoop, contact PARIS Tech, and they will lift the member limit for you in the free version, as you will need to go beyond the member limit that ships with the free version.
In sum, OLAP.com is pleased to see OLAP rising in relevance once again and getting some of the recognition we felt it deserved all along. It is a testament to the power and value OLAP has as a technology.
The Power of OLAP and Excel
Should Excel be a key component of your company’s Business Performance Management (BPM) system? There’s no doubt how most IT managers would answer this question. Name IT’s top ten requirements for a successful BPM system, and they’ll quickly explain how Excel violates dozens of them. Even the user community is concerned. Companies are larger and more complex now than in the past; they are too complex for Excel. Managers need information more quickly now; they can’t wait for another Excel report. Excel spreadsheets don’t scale well. They can’t be used by many different users. Excel reports have many errors. Excel security is a joke. Excel output is ugly. Excel consolidation occupies a large corner of Spreadsheet Hell. For these reasons, and many more, a growing number of companies of all sizes have concluded that it’s time to replace Excel. But before your company takes that leap of faith, perhaps you should take another look at Excel. Particularly when Excel can be enhanced by an Excel-friendly OLAP database.That technology eliminates the classic objections to using Excel for business performance management.
Excel-friendly OLAP products cure many of the problems that both users and IT managers have with Excel. But before I explain why this is so, I should explain what OLAP is, and how it can be Excel-friendly. Although OLAP technology has been available for years, it’s still quite obscure. One reason is that “OLAP” is an acronym for four words that are remarkably devoid of meaning: On-Line Analytical Processing. OLAP databases are more easily understood when they’re compared with relational databases. Both “OLAP” and “relational” are names for a type of database technology. Oversimplified, relational databases contain lists of stuff; OLAP databases contain cubes of stuff.
For example, you could keep your accounting general ledger data in a simple cube with three dimensions: Account, Division, and Month. At the intersection of any particular account, division, and month you would find one number. By convention, a positive number would be a debit and a negative number would be a credit. Most cubes have more than three dimensions. And they typically contain a wide variety of business data, not merely General Ledger data. OLAP cubes also could contain monthly headcounts, currency exchange rates, daily sales detail, budgets, forecasts, hourly production data, the quarterly financials of your publicly traded competitors, and so on.
You probably could find at least 50 OLAP products on the market. But most of them lack a key characteristic: spreadsheet functions.
Excel-friendly OLAP products offer a wide variety of spreadsheet functions that read data from cubes into Excel. Most such products also offer spreadsheet functions that can write to the OLAP database from Excel…with full security, of course.
Read-write security typically can be defined down to the cell level by user. Therefore, only certain analysts can write to a forecast cube. A department manager can read only the salaries of people who report to him. And the OLAP administrator must use a special password to update the General Ledger cube.
Other OLAP products push data into Excel; Excel-friendly OLAP pulls data into Excel. To an Excel user, the difference between push and pull is significant.
Using the push technology, users typically must interact with their OLAP product’s user interface to choose data and then write it as a block of numbers to Excel. If a report relies on five different views of data, users must do this five times. Worse, the data typically isn’t written where it’s needed within the body of the report. Instead, the data merely is parked in the spreadsheet for use somewhere else.
Using the pull technology, spreadsheet users can write formulas that pull the data from any number of cells in any number of cubes in the database. Even a single spreadsheet cell can contain a formula that pulls data from several cubes.
At first reading, it’s easy to overlook the significant difference between this method of serving data to Excel and most others. Spreadsheets linked to Excel-friendly OLAP databases don’t contain data; they contain only formulas linked to data on the server. In contrast, most other technologies write blocks of data to Excel. It really doesn’t matter whether the data is imported as a text file, copied and pasted, generated by a PivotTable, or pushed to a spreadsheet by some other OLAP. The other technologies turn Excel into a data store. But Excel-friendly OLAP eliminates that problem, by giving you real-time data for a successful BPM system.
To learn more about OLAP, click here.
“There’s nothing inherently wrong with spreadsheets; they’re excellent tools for many different jobs. But data visualization and data communication is not one of them.” – Bernard Marr
We couldn’t agree more with what Bernard is saying in his article, “Why You Must STOP Reporting Data in Excel!” Excel is everywhere and it has proven to be a valuable resource to every company across the globe. The problem is that many companies are using spreadsheets as their main line of communication internally. Excel is great at displaying all of the raw data you could possibly dream of, just ask any Data Analyst, who eats, sleeps and dreams of never-ending spreadsheets. Bernard gets right to the point and lays out the top 4 reasons that spreadsheets are not the right fit for visualizing data and communication within an organization.
Most people don’t like them.
Bernard makes a great point, unless you work with Excel frequently like a data analyst, it has the reputation of being intimidating. Employees will be reluctant to use it, let alone even think about analyzing data from it. If employees are not clerking in Excel all day, they are most likely going to give Excel the cold shoulder when it comes to communicating data.
Important data is hidden.
I think it is safe to agree with Bernard on this. Spreadsheets are not the best visualization tool out there. Most spreadsheets today are full of endless numbers. If users can’t look at the data and quickly decipher valuable vs. non-valuable, that is a problem. There are better visualization tools that paint a clearer picture and allow for effective communication.
Loss of historical data.
Users in Excel are constantly updating the facts and data as necessary. The downfall to that is it essentially erases all historical data. Without historical data there is no clear way to see the trends and patterns. It takes away the ability to make predictions for the future.
It’s difficult to share.
Spreadsheets are not ideal for collaborative data sharing because they allow the risk of having data deleted or changed. The way that data is shared today is by emailing updated spreadsheets. This data is considered stale or dead, it lacks the key component of remaining “live” or in real-time. This way of sharing is not only time consuming but eliminates the opportunity for users to collaborate while never losing connection to the most updated information available.
The great news is, there’s an easy answer to all of the common frustrations of spreadsheets…
PowerOLAP is an example of a product developed with a solution that addresses all of these problems. It allows for real-time collaboration between users, while always remaining “live”. It has the ability to store historical data which allows for accurate analytical predictions to be reported. Take a deeper look into PowerOLAP and see how it can take your organization to the next level.
To read the entire article by Bernard Marr, click here.
Human Resources is beginning to pull ahead in the Business Analytics world. One thing is certain, if you want to run a successful business, you need to hire the right people to help you get there. Who is in charge of recruiting and hiring your team members? “DING, DING, DING!” you guessed it, Human Resources. In a “Big Data” world, HR can use “People Data” to their advantage and help businesses develop strategy when it comes to hiring the best candidates. As David Klobucher writes in his article, “Data-driven confidence will help HR professionals identify behaviors and interview styles that attract better employees, as well as qualities that make effective workers – and lead to faster promotions.”
I agree with Klobucher, this is a great time to be in HR. There are big opportunities that may be presented to anyone working in HR. Executives within businesses are looking to their Human Resources department to help build the strategy to success. Of course this all depends on if HR professionals “welcome” the business analytics technology with warm arms. As stated in the article, many individuals working with Human Resources are not completely comfortable using data just yet. In today’s world, Big Data surrounds all of us, but for HR, this can lead to big success from analyzing data of past successes and past failures.
In some HR departments, to take on this scope of technology could be intimidating, however like one of my favorite sayings goes, “I never said it would be easy, I only said it would be worth it.”
Read original article here.
Originally posted on October 26, 2015.
“Excel is one of those applications that the business world cannot live without.”
So says one of 27 Excel experts commenting on Microsoft’s Power BI Suite and its effect on the great wide world of spreadsheet users.
As Excel lovers, we couldn’t agree more!
There’s a wealth of wisdom in the observations made by these 27 pros. Along with the main topic of what’s new in Power BI Suite, there’s excellent insight on the use of Excel and BI generally. (For a good post about what one expert calls a “running joke in BI communities—‘What is the most used feature in any business intelligence solution?’”, see But, Does It Export to Excel?, from PARIS Technologies.)
About what’s new with Power BI Suite, the experts agree that it delivers significantly powerful new capabilities: from connecting to enterprise data (Power Query) to aggregating differently sourced data (Power Pivot) to creating exciting visualizations (Power View and Power Map—watch out, “Visual Analytics” products!), this suite of tools signifies a whole new era of “self-service BI” for Excel users.
Smart guys and gals that they are, the experts point up some caveats. How will these new capabilities affect a company’s “B.I. workflow[s]”? And, mightn’t Power BI, by empowering Excel user(s), propagate more—and more complex—silos of data among disconnected groups of users? Will IT lose total control, if users feel it’s their Excel-given birthright to reach back to underlying data sets for BI solutions? And as to collaborative work—will SharePoint be the answer, finally?
All the caveats and concerns are certainly worth considering … That said, from our standpoint: we begin with the premise that user-empowering technologies—Excel or otherwise—are a good thing! As for the caveats, won’t someone please invent a technology that addresses concerns about security and collaboration? And one that provides for other application needs, like planning, budgeting and forecasting? Because that’s what people do in Excel! And while they’re at it, a solution that is inclusive of other non-Excel users? (Hmmm, maybe someone has – see here for a description of PARIS’s Olation).
“The future looks very bright for Excel and BI,” says another expert. Here’s to a future that’s bright for all BI users—and no caveats required!
Read the original article, from InvestInTech.com here: 27 Microsoft Excel Experts Predict the Future of Excel in Business Intelligence
If you think OLAP is Obsolete,
A couple things could be possible:
You don’t know what OLAP is.
You haven’t seen a recent OLAP application.
You never tried to do the knitty-gritty of business planning.
You’ve resigned yourself to doing manual labor in Excel spreadsheets and pushing to a dashboard.
OK, so I’ll give nay-sayers of OLAP a little bit of credit, OLAP (historically) can be frustrating. Especially when some implementations are hardly what we consider to be “online”. Most of what people are calling OLAP technology is not really connected in a live way to the data source. There is a batch process to update the data from relational source to a Proprietary OLAP cube.
Now that is where you lose most of the IT people. Ugh OLAP, really? IT Teams need a proprietary system to maintain like a hole in the head, because they are already underwater just trying to make sure all the delicate connections between systems are running. They just want to know that processes are able to finish running, and that their end-users are eventually served with the data they need.
The new batch of more evolved OLAP systems will address all those painful processes and more. And how dare anyone call that obsolete?! That is the opposite of obsolete—it is what you need—a platform which allows you to:
1.) Connect the relational source to the “cube” or multidimensional modeling space
2.) Consolidate several data sources
3.) Easy access to consolidated source data in ANY front-end, and
4.) Live, real-time updates in a collaborative environment.
Never heard of an OLAP product that can do all that? Check out the Olation eBook for a quick intro. The most exciting things in OLAP have yet to come!