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Database / Apache Cassandra Interview Questions
Compare Cassandra Vs Relational Databases.
| Cassandra | RDBMS |
| Data may be unstructured. | Only structured data. |
| Flexible schema. | Fixed schema. |
| Data is written in many locations. | Data is written in mostly one location. |
| In Cassandra, a table is a list of "nested key-value pairs". (Row x Column Key x Column value) | In RDBMS, a table is an array of arrays. (Row x Column) |
| Keyspace is the outermost container which contains data corresponding to an application. | Database is the outermost container which contains data corresponding to an application. |
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