Top data science tools and platforms providers across the world. Useful information for data science and data analytics developers.
Data Science is a combination of multiple skills. AI and Machine Learning are part of data science. You can create AI and Machine Learning products with data.
The term tokenization refers to create a numeric or alphanumeric number in place of the original card number. It is difficult for hackers to get original card numbers.
Vault-Tokenization is a concept a Vault server create a new Token for each transaction when Customer uses Credit or Debit Card at Merchant outlets
Let us see an example, data analysis. Here, card numbers masked with other junk characters for security purpose.
Popular Tokenization Servers
There are two kinds of servers currently popular for implementing tokenization.
Vault-based
Vault-less
Video Presentation on Tokenization
Vault-based server
The term vault based means both card number and token will be stored in a Table usually Teradata tables. During increasing volume of transactions, the handling of Table is a big challenge.
Every time during tokenization it stores a record for each card and its token. When you used a card multiple times, each time it generates multiple tokens. It is a fundamental concept.
So the challenge here is Table size will be increased.
Tokenization process
Vault-less server
The recently established technology is much faster than the vault based model, where the card numbers and tokens will not be stored. Whenever it received a request, it generates a random number.
Even during de-tokenization, it just decode the random number and sends actual card number. Also possible to send numeric/alpha numeric tokens.
Just read your article on vault -v- vaultless, this question can only be answered depending on the vault itself - was it built to be scalable? Does it store every transaction? Quite simply no it does not, but like i say it all depends on how the vault was built. Is it more secure than vaultless - definately.
Vault-less is reversible security method that replaces sensitive data with fake data that looks and feels just like the real thing. So vault-less is advanced than Vault.
I am practicing Hyperledger. This is one of the top listed blockchains. This architecture follows R3 Corda specifications. Sharing the interview questions with you that I have prepared for my interview.
Though Ethereum leads in the real-time applications. The latest Hyperledger version is now ready for production applications. It has now become stable for production applications. The Hyperledger now backed by IBM. But, it is still an open source. These interview questions help you to read quickly.
The below set of interview questions help you like a tutorial on Hyperledger fabric.
Hyperledger Fabric Interview Questions1). What are Nodes?
In Hyperledger the communication entities are called Nodes.
2). What are the three different types of Nodes?
- Client Node
- Peer Node
- Order Node
The Client node initiates transactions. The peer node commits the transaction. The order node guarantees the delivery.
3). What is Channel?
A channel in Hyperledger is the subnet of the main blockchain. You c…
Blue prism is an automation tool useful to execute repetitive tasks without human effort. To learn this tool you need the right material. Provided below quick reference materials to understand detailed elements, architecture and creating new bots. Useful if you are a new learner and trying to enter into automation career.
The number one and most popular tool in automation is a Blue prism. In this post, I have given references for popular materials and resources so that you can use for your interviews.
RPA Blue Prism
RPA blue prism tutorial popular resources I have given in this post. You can download quickly. Learning Blue Prism is a really good option if you are a learner of Robotic process automation.
RPA Advantages
The RPA is also called "Robotic Process Automation"- Real advantages are you can automate any business process and you can complete the customer requests in less time.
Perfect in PL/SQL is an art. To become this you need to understand top reserved words and their meanings. The below list is useful for your projects.
Top List of PL/SQL Reserved Words..
Before you start knowing reserved words, wait one moment. The reserved words all are similar to words that you use in normal SQL. ALL*DESC*ISOLATIONOUTSQLERRMALTER*DISTINCT*JAVAPACKAGESTART*AND*DOLEVEL*PARTITIONSTDDEVANY*DROP*LIKE*PCTFREE*SUBTYPEARRAYELSE*LIMITEDPLS_INTEGERSUCCESSFUL*AS*ELSIFLOCK*POSITIVESUMASC*ENDLONG*POSITIVENSYNONYM*AUTHIDEXCEPTIONLOOPPRAGMASYSDATE*AVGEXCLUSIVE*MAXPRIOR*TABLE*BEGINEXECUTEMINPRIVATETHEN*BETWEEN*EXISTS*MINUS*PROCEDURETIMEBINARY_INTEGEREXITMINUTEPUBLIC*TIMESTAMPINTEGEREXTENDSMLSLABEL*RAISE
Robotic process automation is an upcoming IT skill. Three tools are popular. It is difficult to learn all three tool. So, learn anyone tool to start your career in automation.
To get a job in this line, I found in my research that some programming skills and Hand-on training on any one of the tools is required. Also, try to know the differences between popular RPA tools.
Skills Companies Looking in Automation Engineers
All big companies looking for candidates having experience in Automation anywhere, Blue Prism and UIPath. It is not possible to learn all tools. Learn anyone tool and do practice well.
Ok.
You may ask a question about how to do it. Join in good training institute and learn one tool. Take online classes to learn faster.
To learn Uipath try here. Also, you can enroll online course to learn UiPath.
UiPath GO The list of IT skills you needAutomation anywhere/Blue Prism/Uipath .Net/C#/Java/SQL skills MS-Visio Power Builder Python scripts/Unix Scripts/Perl Scripts HTML/CSS/J…
Top data science tools and platforms providers across the world. Useful information for data science and data analytics developers.
Data Science is a combination of multiple skills. AI and Machine Learning are part of data science. You can create AI and Machine Learning products with data.
Robotic process automation is growing area and many IT developers across the board started up-skill in this popular area. I have written this post for the benefit of Software developers who are interested in RPA also called Robotic Process Automation.
In my previous post, I have described that total 12 tools are available in the market. Out of those 3 tools are most popular. Those are Automation anywhere, BluePrism and Uipath. Many programmers asked what are the differences between these tools. I have given differences of all these three RPA tools.
BluePrism Blue Prism has taken a simple concept, replicating user activity on the desktop, and
made it enterprise strength. The technology is scalable, secure, resilient, and flexible
and is supported by a comprehensive methodology, operational framework and provided
as packaged software.The technology is developed and deployed within a “corridor of IT
governance” and has sophisticated error handling and process modelling capabilities to
ens…
These are complex Hadoop interview questions. This is my 3rd set of questions useful for your interviews. 1). What are the features of Standalone (local) mode?
Ans). In stand-alone mode there are no daemons, everything runs on a single JVM. It has no DFS and utilizes the local file system. Stand-alone mode is suitable only for running MapReduce programs during development. It is one of the least used environments.
2). What are the features of Pseudo mode?
Ans). The pseudo mode is used both for development and in the QA environment. In the Pseudo mode, all the daemons run on the same machine.
3). Can we call VMs as pseudos?
Ans). No, VMs are not pseudos because VM is something different and pseudo is very specific to Hadoop. 4). What are the features of Fully Distributed mode?
Ans). The fully Distributed mode is used in the production environment, where we have ‘n’ number of machines forming a Hadoop cluster. Hadoop daemons run on a cluster of machines. There is one host onto which Namenod…
In this post I am giving top examples on SQL functions. About built-in functions, I have covered in my previous post.
List of examples:DATE-TIME functionsNumeric functionsChar functionsNull-related functions1. DATE/TIME functions
SELECT p_code, launch_dt, CURRENT_DATE FROM product;
CURRENT_DATE returns current date.
SELECT p_code, TO_CHAR(launch_dt, 'DD MONTH YYYY') reformatted_dt FROM product;
TO_CHAR function returns DATE in CHAR format. 2. Numeric functions
SELECT p_code, price, (price - 20), ABS(price - 20.00) FROM product;
ABS - function returns absolute value
SELECT p_code, price, ROUND (price, 1) FROM product;
ROUND function - Round to 1 digit.
SELECT p_code, price, SIGN(price - 15) FROM product;
SIGN function - It returns sign; either + or -
SELECT p_code, price, TRUNC(price, 1) FROM product;
TRUNC function - Truncates to a certain number of decimal places. 3. CHAR functions
SELECT p_code, CONCAT(CONCAT(p_name, ' -- ') , price) FROM product;
CONCAT function - co…
Hello Srini
ReplyDeleteJust read your article on vault -v- vaultless, this question can only be answered depending on the vault itself - was it built to be scalable? Does it store every transaction? Quite simply no it does not, but like i say it all depends on how the vault was built. Is it more secure than vaultless - definately.
Vault-less is reversible security method that replaces sensitive data with fake data that looks and feels just like the real thing. So vault-less is advanced than Vault.
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