A: AExternal tables can be updated.
B: BExternal tables are read-only tables.
C: CIndexes can be created on external tables.
D: DIndexes cannot be created on external tables.
举一反三
- Titles of tables should be written below the tables.
- Which describes the default behavior when you create a table? () A. The table is accessible to all users. B. Tables are created in the public schema. C. Tables are created in your schema. D. Tables are created in the DBA schema. E. You must specify the schema when the table is created.
- Tables can also be used ____________________.
- Mike and Sandy are two woodworkers who both make tables and chairs. In one month, Mike can make 4 tables or 20 chairs, where Sandy can make 6 tables or 18 chairs. Given this, we know that the opportunity cost of 1 chair is
- Sean got a job of at a fast-food restaurant. A: wait for tables B: waiting for tables C: waiting tables D: /
内容
- 0
Which statement is true regarding synonyms?（） A: Synonyms can be created only for a table B: Synonyms are used to reference only those tables that are owned by another user C: A public synonym and a private synonym can exist with the same name for the same table D: The DROP SYNONYM statement removes the synonym, and the table on which the synonym has been created becomes invalid
- 1
The customer and order tables are often used in joins， thereby resulting in complex queries. You created views to simplify the writing of queries. These views are stored in（）. A: user tables B: view segment C: table segment D: data dictionary E: object segment F: performance tables
- 2
"To turn the tables" means ______. A: to move the tables B: to carry the tables away C: to gain courage D: to gain an advantage after having been at a disadvantage
- 3
While designing the database for one of your online transaction processing （OLTP） applications， you want to achieve the following： a） high availability of data b） faster primary key access to the table data c） compact storage for the table Which type of tables would you use to achieve these objectives？（） A: heap tables B: object tables C: partitioned tables D: indexorganized tables （IOTs）
- 4
While designing the database for one of your online transaction processing （OLTP） applications， you want to achieve the following： a） high availability of data b） faster primary key access to the table data c） compact storage for the table Which type of tables would you use to achieve these objectives？（） A: Aheap tables B: Bobject tables C: Cpartitioned tables D: Dindexorganized tables （IOTs）