Differences between HBase and conventional databases

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Advantages of HBase compared to conventional databases:

1. HBase uses the column-based storage mode. When multiple records are added, the data is stored by column. Conventional databases use the row-based storage mode. When multiple records are added, the data is read and stored by row.
2. HBase supports horizontal expansion, automatic splitting, and linear performance improvement. Conventional databases require manual configuration and are difficult to expand and maintain.
3. HBase performance remains unchanged when massive sets of data are concurrently read or written. In the same situation, conventional database performance drops dramatically. Conventional databases do, however, perform better in small-scale data read/write scenarios.
4. HBase data is stored in triplicate on HDFS, eliminating single points of failure and implementing cluster-level active/standby reliability. Conventional databases use active/standby mode to ensure reliability.
5. HBase supports dynamic expansion of columns while conventional databases do not.
6. CTBase in HBase supports correlation query and secondary indexing. Conventional databases only support basic conditional querying.
7. CTBase/Phoenix supports visual GUIs. Conventional databases use a visual query system.
8. HBase supports read/write permissions of tables and columns. Conventional databases only support basic rights control.
9. HBase is applicable to TB- and PB-level data, while conventional databases are not.

Disadvantages of HBase compared to conventional databases:

10. HBase does not support simultaneous transaction authoring for multiple records. This means that data rollbacks need to be performed on related applications. Conventional databases support this function.
11. HBase only supports the character data type. Conventional databases support various data types.

Other related questions:
What are the advantages of HBase compared with conventional databases
Advantages of HBase compared to conventional databases: 1. HBase uses the column-based storage mode. When multiple records are added, the data is stored by column. Conventional databases use the row-based storage mode. When multiple records are added, the data is read and stored by row. 2. HBase supports horizontal expansion, automatic splitting, and linear performance improvement. Conventional databases require manual configuration and are difficult to expand and maintain. 3. HBase performance remains unchanged when massive sets of data are concurrently read or written. In the same situation, conventional database performance drops dramatically. Conventional databases do, however, perform better in small-scale data read/write scenarios. 4. HBase data is stored in triplicate on HDFS, eliminating single points of failure and implementing cluster-level active/standby reliability. Conventional databases use active/standby mode to ensure reliability. 5. HBase supports dynamic expansion of columns while conventional databases do not. 6. CTBase in HBase supports correlation query and secondary indexing. Conventional databases only support basic conditional querying. 7. CTBase/Phoenix supports visual GUIs. Conventional databases use a visual query system. 8. HBase supports read/write permissions of tables and columns. Conventional databases only support basic rights control. 9. HBase is applicable to TB- and PB-level data, while conventional databases are not. Disadvantages of HBase compared to conventional databases: 10. HBase does not support simultaneous transaction authoring for multiple records. This means that data rollbacks need to be performed on related applications. Conventional databases support this function. 11. HBase only supports the character data type. Conventional databases support various data types.

Differences between Loader and conventional ETL
Compared with conventional Extract-Transform-Load (ETL), Loader has the following advantage and disadvantage: 1. Advantage: Loader uses a MapReduce-based parallel computing architecture as the underlying architecture, which delivers a faster data processing speed than ETL. 2. Disadvantage: Compared with ETL, Loader focuses more on the data import and export function of FusionInsight Hadoop and is weak in data conversion.

Difference between conventional WDM equipment and OTN equipment
Both of them use the DWDM technology. The difference between them lies in that OTN equipment can achieve electrical cross-connection scheduling for various types of services.

To which database type does HBase belong?
Advantages of HBase compared to conventional databases: 1. HBase uses the column-based storage mode. When multiple records are added, the data is stored by column. Conventional databases use the row-based storage mode. When multiple records are added, the data is read and stored by row. 2. HBase supports horizontal expansion, automatic splitting, and linear performance improvement. Conventional databases require manual configuration and are difficult to expand and maintain. 3. HBase performance remains unchanged when massive sets of data are concurrently read or written. In the same situation, conventional database performance drops dramatically. Conventional databases do, however, perform better in small-scale data read/write scenarios. 4. HBase data is stored in triplicate on HDFS, eliminating single points of failure and implementing cluster-level active/standby reliability. Conventional databases use active/standby mode to ensure reliability. 5. HBase supports dynamic expansion of columns while conventional databases do not. 6. CTBase in HBase supports correlation query and secondary indexing. Conventional databases only support basic conditional querying. 7. CTBase/Phoenix supports visual GUIs. Conventional databases use a visual query system. 8. HBase supports read/write permissions of tables and columns. Conventional databases only support basic rights control. 9. HBase is applicable to TB- and PB-level data, while conventional databases are not. Disadvantages of HBase compared to conventional databases: 10. HBase does not support simultaneous transaction authoring for multiple records. This means that data rollbacks need to be performed on related applications. Conventional databases support this function. 11. HBase only supports the character data type. Conventional databases support various data types.

Differences between the MDB, DRDB, FDB0, and FDB1 databases
DRDB: It is a dynamic database stored in the dynamic RAM and is powered by batteries. MDB: It is a static database stored in the power-off RAM and is lost upon a power failure. FDB0 and FDB1: They are permanent databases stored in FLASHROM. In normal cases, NE configuration data is stored in both the MDB and DRDB databases. Upon a restart from a power failure, data in the MDB database is lost. Therefore, the system control board first restores data from the DRDB database. If there is no data in the DRDB database (for example, the batteries are used up or fail), the system control board first restores data from the FDB0 and FDB1 databases.

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