MongoDB

 MongoDB is an open source, document-based database management system that does not require a table schema description. MongoDB - classified as NoSQL and uses JSON-like documents and a database schema. If all four previous DBMSs are well known to most IT professionals, then few have heard of MongoDB. But she confidently takes the 5th line in almost all ratings. And as a result, in our ranking, she also occupies the 5th position.

Trend reversal patterns-Паттерны разворота тренда


 When patterns appear head and shoulders, double / triple top / bottom, a change in the current trend or a serious price correction is likely. Often, such figures are formed at historical highs or at strong support/resistance levels.