COMMIT
MERGE
UPDATE
DELETE
CREATE
DROP...
第1题:
Over the course of a day,a department performed multiple DML statements (inserts, updates, deletes) on multiple rows of data in multiple tables. The manager would like a report showing the time, table name,and DML type for all changes that were made. Which Flashback technology would be the best choice to produce the list?()
第2题:
Which are DML statements? ()
第3题:
You have altered a non-unique index to be invisible to determine if queries execute within an acceptable response time without using this index. Which two are possible if table updates are performed which affect the invisible index columns?()
第4题:
Every SQL statement in the STS is considered only once for execution
The SQL statements in the STS are executed concurrently to produce the execution plan and execution statistics
The execution plan and execution statistics are computed for each SQL statement in the STS
The effects of DDL and DML are considered to produce the execution plan and execution statistics
第5题:
When a table is dropped, the corresponding indexes are automatically dropped.
For each DML operation performed, the corresponding indexes are automatically updated.
Indexes should be created on columns that are frequently referenced as part of an expression.
A non-deferrable PRIMARY KEY or UNIQUE KEY constraint in a table automatically creates a uniqueindex.
第6题:
Only a single partitioning key column can be specified.
All DML statements must use partition-extended syntax.
The same physical attributes must be specified for each partition.
Unique local indexes cannot be created on a system-partitioned table.
Traditional partition pruning and partitionwise joins are not supported on these tables.
第7题:
Indexes and views can be created on temporary tables.
Both the data and the structure of temporary tables can be exported.
Temporary tables are always created in a user’s temporary tablespace.
The data inserted into a temporary table in a session is available to other sessions.
Data manipulation language (DML) locks are never acquired on the data of temporary tables
第8题:
Views can be created as read only.
Views are data segments like tables.
Views can be created on the basis of more than one table.
Data manipulation language (DML) operations cannot be performed on views.
第9题:
COMMIT…
MERGE…
UPDATE…
DELETE…
CREATE…
DROP…
第10题:
It saves disk space and reduces memory usage.
It saves disk space but has no effect on memory usage.
It incurs extra CPU overhead during DML as well as direct loading operations.
It incurs extra CPU overhead during DML but not direct loading operations.
It requires uncompress operation during I/O.
第11题:
The VERSIONS BETWEEN clause may be used in DML statements.
The VERSIONS BETWEEN clause may be used in DDL statements.
The VERSIONS BETWEEN clause may not be used to query past DDL changes to tables.
The VERSIONS BETWEEN clause may not be used to query past DML statements to tables.
第12题:
Which are DML statements? ()
第13题:
Why does performance degrade when many UPDATE, INSERT, or DELETE statements are issued on a tablethat has an associated Bitmap index()
第14题:
It saves disk space and reduces memory usage.
It saves disk space but has no effect on memory usage.
It incurs extra CPU overhead during DML as well as direct loading operations.
It incurs extra CPU overhead during DML but not direct loading operations.
It requires uncompress operation during I/O.
第15题:
COMMIT
MERGE
UPDATE
DELETE
CREATE
DROP...
第16题:
COMMIT
MERGE
UPDATE
DELETE
CREATE
DROP
第17题:
Creating and dropping tables in the data file being moved
Performing file shrink of the data file being moved
Querying tables in the data file being moved
Performing Block Media Recovery for a data block in the data file being moved
Flashing back the database
Executing DML statements on objects stored in the data file being moved
第18题:
Flashback Table can be performed on system tables.
Flashback Table operation does not shrink the segments.
Flashback Table uses log mining to extract SQL_REDO and SQL_UNDO statements.
Flashback Table operation acquires exclusive data manipulation language (DML) locks.
第19题:
Fine-Grained Auditing (FGA) is enabled for the PRICE column in the PRODUCTS table for SELECT statements only when a row with PRICE > 10000 is accessed.
FGA is enabled for the PRODUCTS.PRICE column and an audit record is written whenever a row with PRICE > 10000 is accessed.
FGA is enabled for all DML operations by JIM on the PRODUCTS.PRICE column.
FGA is enabled for the PRICE column of the PRODUCTS table and the SQL statements is captured in the FGA audit trial.
第20题:
Flashback Drop
Flashback Query
Flashback Transaction Query
Flashback Versions Query
Flashback Table
第21题:
The index remains invisible.
The index is not updated by the DML statements on the indexed table.
The index automatically becomes visible in order to have it updated by DML on the table.
The index becomes unusable but the table is updated by the DML.
The index is updated by the DML on the table.