HiveManaged tables and external tables can be created, which of the following descriptions is correct for both types of tables?

• A.When using managed tables, perform DROWhen P operates,just delete the originaldata
• B.When using an external table, metadata and data are combined when performing a DROP operationdelete
• C.When using managed tables, execute DRWhen the OP operates, the metadata and data will bedelete
• D.When using an external table, when performing a DROP operation, onlydeletemetadata

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Kerberos can only provide security authentication for services in the cluster.

• A.True
• B.False

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Which of the following belongs to DDL (Data Definition Language) in Hive SQL?

• A.delete table
• B.data import
• C.build table
• D.Modify table

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Regarding the comparison between Hive and traditional data warehouse, which is wrong in the following description?

• A.Since Hive's data is stored in HDFS, it can ensure high fault tolerance and high reliability of the data
• B.Hive is based on HDFS storage, theoretically the storage capacity can be expanded indefinitely, while the traditional data warehouse storage capacity will have an upper limit
• C.Hive metadata storage is independent of data storage, thus decoupling metadata and data, with high flexibility, while traditional data warehouse data applications are single and low flexibility
• D.Since Hive is based on a big data platform, query efficiency is faster than traditional data warehouses

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Under the HDFS federation mechanism, metadata between NameNodes is not shared.

• A.False
• B.True

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