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Bhargava Surimenu
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NO SQL Types and vendors in market
NO SQL KEY - VALUE Store  - Similar to a  MAP.     e.g. Dynamo DB or REDIS DOCUMENT Sore   - Similar to KEY-VALUE, value can be JSON/XML and key will be unqiuely idnetified this document.    e.g. Coutch DB or mongoDB. Column Store - Multi timentional table,...
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OAuth2 Presentation
OAuth2 Presentaion from Bhargav Surimenu
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Maven Build Life Cyles
Following are the maven build life cycles. Clean - Removes the generated files in 'target' folder. command : mvn clean Validate - It validates your project and verify all the necessary information is there in project or not. mvn  valiate Compile - It compil...
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Regular Expression in java
1 [abc] a, b, or c (simple class) 2 [^abc] Any character except a, b, or c (negation) 3 [a-zA-Z] a through z or A through Z, inclusive (range) 4 [a-d[m-p]] a through d, or m through p: [a-dm-p] (union) 5 [a-z&&[def]] d, e, or f (intersection) 6 [a-z&&[^bc]]...
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These are frequent mistakes a common developer does. Off course those were many but these are in my mind.
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Most Common mistakes in Java Coding.
1. Copy & Paste Its one of the most powerful tool and technique in the typical programmer. But at the same time its too dangerous that you ought to forgot the code according to you requirements. So always be cautious about what piece of code you are copying...
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