Pasó 1Z0-071 con volcados 1Z0-071 actualizados
Time:2019-08-20Content Source:Passnow.mx Collected
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Los volcados actualizados de Oracle Database 12c SQL 1Z0-071 contienen 228 preguntas y respuestas, que pueden ayudarlo a probar todas las habilidades relacionadas con el examen 1Z0-071. Comparta algunos volcados actualizados de Oracle 1Z0-071 a continuación para que los revise.
1.Which two statements are true regarding the USING and ON clauses in table joins?
A. Both USING and ON clauses can be used for equijoins and nonequijoins.
B. A maximum of one pair of columns can be joined between two tables using the ON clause.
C. The ON clause can be used to join tables on columns that have different names but compatible data types.
D. The WHERE clause can be used to apply additional conditions in SELECT statements containing the ON or the USING clause.
Answer: CD
2.Which two statements are true regarding the DELETE and TRUNCATE commands?
A. DELETE can be used to remove rows from only one table in one statement.
B. DELETE can be used to remove rows from multiple tables in one statement.
C. DELETE can be used to remove rows only for tables that are parents for a child table that has a referential integrity constraint referring to the parent.
D. DELETE can be used to remove data from specific columns as well as complete rows.
E. DELETE and TRUNCATE can be used for tables that are parents for a child table that has a referential integrity constraint having an ON DELETE rule.
Answer: AE
3.What is the primary difference between the relational database (RDB) and object-oriented database (OODB) models?
A. OODB supports multiple objects in the same database, whereas RDB supports only tables.
B. RDB supports only E.F. Codd’s rules, whereas OODB does not support them.
C. OODB incorporates methods with data structure definition, whereas RDB does not allow this.
D. RDB allows the definition of relationships between different tables, whereas OODB does not allow this.
Answer: C
4.Which two statements are true? (Choose two.)
A. The USER_SYNONYMS view can provide information about private synonyms.
B. The user SYSTEM owns all the base tables and user-accessible views of the data dictionary.
C. All the dynamic performance views prefixed with v$ are accessible to all the database users.
D. The USER_OBJECTS view can provide information about the tables and views created by the user who queries the view.
E. DICTIONARY is a view that contains the names of all the data dictionary views that the user can access.
Answer: AD
5.Which statement is true about the Oracle SQL, DELETE and TRUNCATE statements?
A. DELTE and TRUNCATE statements can have a rollback done to restore data into a table.
B. DELETE and TRUNCATE statements remove all indexes for the tables on which they are performed.
C. DELETE but not TRUNCATE statement can be used to remove data from selective columns and rows of a table.
D. DELETE but not TRUNCATE statement can be used to selectively remove rows from a table.
Answer: D
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