CouchDB is a NoSQL, open source database with JavaScript as its query language. It stores the data with JSON documents, which not only secures the data but also makes the task easy by adopting the correct approach. This well-engraved database works efficiently with modern web or mobile apps and is developed by Apache. One can easily distribute the data by using CouchDB's incremental replication. It comes with a series of features, includes on-the-fly document transformation with real-time change notification, this gives web app development a fresh appearance. This database is highly demandable and has fault tolerate storage engine that safeguards the data of the users, by making it a priority.
Considering the advancement of technology CouchDB is consider as one of the best breeds of the database as it has schema-free document model that fits for all application. Couch Replication is the main reason why user prefers CouchDB. This stores the organized data into database and documents. The system reserves every name that starts with an underscore and then use the same to store its metadata. Here the actual data is mixed with it making everything simple and uniform for use.
Here are a few CouchDB Interview Questions with answers that might help you during the preparation process:
Manual testing uses other testing and seeing the procedure and requires a technical knowledge of SQL and shell scripting. It is a time and efforts consuming procedure and is prone to errors.
CouchDB is simple and easy to maintain no additional cost or efforts are given by the user to maintain this Database. It is flexible and has more scalability, which makes it a better product among others.
Based on the requirements and assumptions in the project a particular kind of database is chosen. CouchDB offers few out of the box features and this leads to the high demand of this database irrespective of challenges. Discussing the replication, multi-master replication seems attractive to the clients in the context of using this database in their project.
Still, the challenge remains in replication is conflict resolution. Maintenance of this database is quite simple and affordable. It doesn’t require too much caring and attention. This is considered as one of the most stable and user-friendly DB and crashes only in critical situations. But it is not always possible to save and protect the whole data after a crash, sometimes data can be lost forever if the proper process not followed. One of the other advantages is as it only uses JSON and HTTP, it reduces the use of middle server and cut downs the cost and is used directly from browser JavaScript.
Best example, which can be given here, is when the user does not wish to change the document data too frequently and without this can define all possible queries in advance. Apart from these services the CouchBase server can fulfill several other requirements like SQL integration, scale-out architecture, core database engine etc.
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