1: The 5V characteristics of big data proposed by IBM include: (), high speed, low value density, and authenticity. Large and diverse
2: Big data is composed of structured data, semi-structured data and ( ) data. unstructured
3: Hadoop is a data management system, as the core of (), which brings together structured and unstructured data. data analysis
4: Hadoop is a large-scale ( ) system with super computing power. Parallel processing framework
5: () is a data warehouse tool based on Hadoop, used for data extraction, transformation, and loading. This is a mechanism that can store, query, and analyze large-scale data stored in (). Hive, Hadoop
6: The Hive data warehouse tool can map structured data files into a database table, and provides SQL query functions, which can convert SQL statements into ( ) tasks for execution. MapReduce
7: The metadata of the data table file is stored in ( ) of HDFS, and the actual data is stored in ( ). NameNode, DataNode
8: In Hive, ( ) is usually used to separate fields (columns). In the CREATE TABLE statement, it can be represented by octal encoding \001. ^A(CTRL+A)
9: Hive usually uses ( ) to separate elements in ARRARY or STRUCT, or to separate key-value pairs in MAP. In the CREATE TABLE statement, it can be represented by octal encoding \002. ^B(CTRL+B)
10: Hive usually uses () to separate keys and values in MAP. In the CREATE TABLE statement, it can be represented by octal encoding \003. ^C(CTRL+C)
11: The following is correct: ( ).
select *from dept_partition distribute by deptno sort by deptno and select *from dept_partition cluster by deptno
12: In the redis database, to modify the value of a key, you can use the ( ) command. SET
13: In the redis database, if you want to create a new key and assign a value, you can use the ( ) command. SET
14: In the redis database, to delete a key and its value, use the ( ) command. DEL
15: In the redis database, to get the value of a certain key, you can use the ( ) command. GET
16: In redis, the command to add elements to the head of the list is ( ). LPUSH
17: In redis, the command to add elements to the end of the list is ( ). RPUSH
18: In redis, the command to add elements to the middle of the list is ( ). LINSERT
19: In redis, the command to pop elements from the head of the list is ( ). LPOP
20: In redis, the command to pop elements from the end of the list is ( ). RPOP
21: In redis, the command to delete a specified value from the list is ( ). LREM
22: In redis, the command to get the number of elements in the list is ( ). LLEN
23: In redis, the command to get the sublist of the list is ( ). LRANGE
24: In redis, the command to get the value of the specified index in the list is ____. LINDEX
25: In redis, the command to modify the value of the specified index in the list is ____. LSET
26: In redis, the command to modify the field value of the hash key is ____. HSET
27: In redis, the command to assign values to multiple fields of the hash key at the same time is ____. HMSET
28: In redis, the command to delete the hash key field is ____. HDEL
29: In redis, the command to get the value of a field of the hash key is ____. HGET
30: In redis, the command to get the value of multiple fields of the hash key is ____. HMGET
31: In redis, the command to get all fields and all values of the hash key is ____. HGETALL
32: In redis, the command to check whether a certain field of the hash key exists is ____. HEXISTS
33: In redis, the command to get all the field names of the hash key is ____. HKEYS
34: In redis, the command to get all field values of the hash key is ____. HVALS
35: In redis, the command to get the number of fields of the hash key is ____. HLEN
36: In redis, the command to add elements of a collection key is ____. SADD
37: In redis, the command to delete elements of a collection key is ____. SREM
38: In redis, the command to get all elements of the specified collection is ____. SMEMBERS
39: In redis, the command to determine whether an element exists in a given collection is ____. SISMEMBER
40: In redis, the command to get the number of elements in the collection is ____. SCARD
41: In the redis database, the command to add elements of an ordered set is ( ). ZADD
42: In the redis database, the command to delete elements of an ordered set is ( ). ZREM
43: In the redis database, the command to delete elements of an ordered set based on the ranking range is (). ZREMRANGEBYRANK
44: In the redis database, the command to delete elements of an ordered set according to the score range is ( ). ZREMRANGEBYSCORE
45: In the redis database, the command to obtain the element score of an ordered set is ( ). ZSCORE
46: In the redis database, the command to obtain a list of ordered set elements ranked within a certain range is ( ). ZRANGE
47: In the redis database, the command to obtain the elements of an ordered set within a specified score range is ( ). ZRANGEBYSCORE
48: In the redis database, the command to get the number of elements in an ordered set is ( ). ZCARD
49: In the redis database, the command to obtain the number of elements within a specified score range in an ordered set is ( ). ZCOUNT
50: In the redis database, the command to obtain the reverse order ranking of elements in an ordered set is ( ). ZREVRANK
51: Hbase is a highly reliable, high-performance, () scalable distributed storage system. column oriented
52: HBase utilizes ( ) as its file storage system. HDFS
53: HBase uses () to process massive data in HBase. Hadoop MapReduce
54: HBase utilizes ( ) as a collaborative service. Zookeeper
55: An HBase table is grouped into a collection of many ( ), which is the basic access control unit. clans
56: ( ) is the smallest unit of distributed data on the HBase cluster. area
57: When there are too many rows in a table, HBase will partition the rows in the table based on the value of (). row key
58: Each Region is composed of ( ) Store, and each Store stores one ( ) data. One or more column families
59: Each Store of HBase is composed of ( ) memStore and ( ) Store File. Store File is saved on HDFS in HFile format. one, 0 at most
60: The command to create a table in HBase is ( ). create
61: The HBase command to modify the column family is ( ). alter
62: The HBase command to delete a table is ( ). drop
63: The HBase command to add table data is ( ). put
64: HBase scans the table to obtain useful values. You can use the command ( ). scan
65: Command to get the value of a row in HBase ( ). get
66: The command to count the number of rows in the HBase table is ( ). count
67: HBase command to delete the value of the specified object in the table ( ). delete
68: The HBase command to delete all element values in the specified row is ( ). deleteall
69: The command in HBase to get the area where the row key is located is ( ). locate_region
70: MongoDB supports two sharding strategies ( ) and ( ) for distributing data across sharded clusters. Hash sharding, range sharding
71: The command to create a MongoDB database is ( ). USE
72: Nodes in the graph database can have ( ) labels, but the relationship must and can only have one relationship type. zero to many
73: The graph database must first () transaction before modifying nodes or adding new relationships to existing nodes. start up
74: The shortest path in the graph database only contains ( ) and its length is ( ). single node, 0
75: The command to create nodes, relationships and attributes in Neo4j is ( ). CREATE
76: The command to obtain data about nodes, relationships and attributes in Neo4j is ( ). MATCH
77: The command to delete nodes and relationships in Neo4j is ( ). DELETE
78: The command to delete attributes of nodes and relationships in Neo4j is ( ). REMOVE
79: The command to add or update labels in Neo4j is ( ). SET
80: In Neo4j, the command to create an index is ( ). CREATE INDEX
81: In Neo4j, the command to delete an index is ( ). DROP INDEX
82: In Neo4j, the command to create a unique constraint is ( ). CREATE CONSTRAINT
83: In Neo4j, the command to delete a unique constraint is ( ). DROP CONSTRAINT