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Introduction to Cassandra Column Family | Edureka Video Lecture | Cassandra: Learn and Master - Database Management
FAQs on Introduction to Cassandra Column Family - Edureka Video Lecture - Cassandra: Learn and Master - Database Management
| 1. What is a column family in Cassandra? |  |
Ans. A column family in Cassandra is a container of rows that share a similar structure. It is similar to a table in a relational database and consists of columns, each with a name and a value.
| 2. How does Cassandra handle data storage in column families? | |
Ans. Cassandra stores data in column families using a distributed and decentralized architecture. Each row in a column family is identified by a unique key, and the columns within a row are stored in a sorted order based on their names.
| 3. What are some advantages of using column families in Cassandra? | |
Ans. Some advantages of using column families in Cassandra include:
- Scalability: Column families allow for easy distribution of data across multiple nodes, enabling horizontal scalability.
- Flexibility: Columns within a row can vary, allowing for dynamic schema changes without affecting other rows.
- High performance: Cassandra's columnar storage format and data model enable fast read and write operations.
| 4. Can column families in Cassandra have different structures within the same keyspace? | |
Ans. No, within the same keyspace, all column families in Cassandra must have the same structure. However, different keyspaces can have different column families with distinct structures.
| 5. How does Cassandra ensure fault tolerance for column families? | |
Ans. Cassandra ensures fault tolerance for column families through replication. Data is replicated across multiple nodes in a cluster, providing high availability and durability. If a node fails, data can still be accessed from other replicas. Additionally, Cassandra uses consistent hashing to distribute data evenly across nodes, ensuring load balancing and fault tolerance.
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Nov 25, 2024 Last updated |
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