What are the advantages of HBase compared with 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 advantage and disadvantage of Loader compared with 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.

Differences between HBase and 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 IPSG and DAI of S series switches
For S series switches, both IP Source Guard (IPSG) and Dynamic ARP Inspection (DAI) use binding tables (static binding table or DHCP snooping binding table) to filter packets. �?IPSG filters IP packets by using binding tables. A switch matches IP packets received by interfaces against binding entries, and forwards the packets matching the binding entries. - DAI filters ARP packets by using binding tables. A switch matches ARP packets received by interfaces against binding entries, and forwards the ARP packets matching the binding entries. - IPSG prevents IP address spoofing attacks. For example, a malicious host steals an authorized host's IP address to access the network or initiate attacks. - DAI can prevent man-in-the-middle attacks. Man-in-the-middle attacks are generally initiated through ARP spoofing. That is, the attacker leads traffic to itself to intercept other hosts' information. - IPSG cannot prevent address conflicts. For example, when a malicious host steals an online host's IP address, the ARP request packets sent by the malicious host will be sent to the online host through broadcast, causing an address conflict. To prevent IP address conflicts, you can configure both IPSG and DAI. - IPSG and DAI resolve different issues and meet different requirements. To ensure network security, you can configure both of them.

Advantages of the UPS when compared with the BBU
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Differences between IPSG and static ARP of S series switches
For S series switches, both IPSG based on a static binding table and static ARP support IP and MAC binding. Their differences are as follows: - IPSG is generally configured on the access switch connected to users or on the aggregation or core switch to prevent IP address spoofing attacks from the intranet. For example, a malicious host steals an authorized host's IP address to access the network. - Static ARP is generally configured on the gateway. The static ARP table stores the ARP entries of key servers to prevent ARP spoofing attacks and ensure normal communication between hosts and servers.

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