Table of Contents
- 1 Which type of replication is supported by a NoSQL database?
- 2 What is replication in NoSQL?
- 3 Is it possible to use JPA with NoSQL databases?
- 4 Does NoSQL support replication?
- 5 Which of the following database service is a NoSQL database?
- 6 Is it OK to duplicate data in NoSQL?
- 7 Does Hibernate work with NoSQL?
- 8 Can we use Hibernate with MongoDB?
Which type of replication is supported by a NoSQL database?
Replication comes in two forms, Master-slave replication makes one node the authoritative copy that handles writes while slaves synchronize with the master and may handle reads. Peer-to-peer replication allows writes to any node; the nodes coordinate to synchronize their copies of the data.
What is replication in NoSQL?
Replication is the process of synchronizing data across multiple servers. Replication provides redundancy and increases data availability with multiple copies of data on different database servers. Replication protects a database from the loss of a single server.
Is it OK to duplicate data in MongoDB?
Then use a periodic map-reduce job to generate the duplicate data. You can then query the single map-reduce result, rather than separate collections. This way you avoid the query overhead, but you also don’t have to hunt down data changes.
Is it possible to use JPA with NoSQL databases?
EclipseLink, reference implementation of JPA, has JPA support for NoSQL databases (MongoDB and Oracle NoSQL) as of the version 2.4.
Does NoSQL support replication?
Some of the most popular NoSQL database systems with versatile replication solutions are Couchbase and MongoDB.
What are the types of NoSQL databases?
NoSQL Databases are mainly categorized into four types: Key-value pair, Column-oriented, Graph-based and Document-oriented. Every category has its unique attributes and limitations.
Which of the following database service is a NoSQL database?
SQL vs. NoSQL Terminology
| SQL | MongoDB | Cassandra |
|---|---|---|
| Index | Index | Index |
| View | View | Materialized view |
| Nested table or object | Embedded document | Map |
| Array | Array | List |
Is it OK to duplicate data in NoSQL?
Duplicating Data Could Become a Best Practice With certain types of NoSQL databases, having data attributes duplicated across different tables or collections could become even a best practice to avoid complex queries.
Does NoSQL have data redundancy?
Data is stored in a normalized form with the purpose of reducing redundancy and ensure data integrity and can be queried using the famous Structured Query Language (SQL).
Does Hibernate work with NoSQL?
Hibernate traditionally offers an Object Relational Mapping (ORM) engine for relational databases. Hibernate OGM engine extends its functionality to support NoSQL datastores. Therefore, each new NoSQL datastore that it supports comes with an implementation of these interfaces.
Can we use Hibernate with MongoDB?
MongoDB requires an entire different way of designing your database focusing on objects instead of columns and tables. while you may be able to create a Hibernate dialect for MongoDB creating a design that would work on both a relational database and a NoSql database will give you a design that works poorly on both.
What are the famous XML databases?
The famous XML databases are Oracle database, MarkLogic exist, MarkLogic Cassandra, and MarkLogic Cassandra exist. Explanation: These xml databases are programming languages that help in the processing and the manipulation of large amounts of data within a short span of time.