Day by day NoSQL databases are releasing their new versions of their databases. But my favorite MongoDB has forgotten its purpose. And day by day the I find a limitation of NoSQL databases. Somehow NoSQL is not for everything. But in this way it seems like, it is not good for anything. I mean the MongoDB. Today I was ...
There are two types of data sets based on the time.Cross-Section DataCross section data is collected on the same point in time. There might be different variables but all of them are collected for the same period of the time. So you won't see any time column.Time-Series Data Time series data expands across periods. Same variable is recorded for different time periods.
Quantitative VariableVariables which can be measured.Discrete Variable Countable variables are discrete variables. There is no need to be whole numbers.Continuous Variable Uncountable variables are continuous variables. This contrasts with discrete variables.Qualitative VariablesNon-numerical variable are called qualitative variables. Sometimes qualitative variables are represented by numbers. But it is useless to perform arithmetic operations on those variables. ...
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History in Linux terminal is very usefull if you get used to it. If you have to ssh long hostname, or long file paths you don't need to type them again and again. You can just grep your history and rip what you want like this. Lets say I want my ssh commands I want to get. history | ...
It's time to learn about Data Warehousing. I was really interested about Data Science. But I really didn't had much idea about Enterprise reporting, or analysis. But this book give much more than Microsoft SQL Server BI tool (Business Intelligence). It helped me to learn basics, some of theories about Data Warehousing. Because I learned things from the scratch, ...
For the first time in my life, I got a chance today to fly. So I on boarded from Colombo. And now I'm at Dubai Airport. This is like a dream to me. And the experience, I'm facing is really cool. Although I didn't feel nervous about process in Airport, I was and I am very careful because this ...
