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Introduction to Cassandra Column Family | Edureka Video Lecture | Cassandra: Learn and Master - Database Management

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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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