Oracle 1z0-071 Dumps

UPDATE statements can have different subqueries to specify the values for each updated column.

INSERT statements can insert NULLS explicitly into a column.

DELETE statements can remove multiple rows based on multiple conditions.

DML statements require a primary key be defined on a table.

INSERT INTO…SELECT…FROM statements automatically commit

A subquery cannot be used in a from clause.

A subquery can be used in a having clause

< ANY returns true If the argument is less than the highest value returned by the subquery.

= ANY can only evaluate the argument against a subquery If it returns two or more values.

A subquery cannot be used in the select list.

A sequence can issue duplicate values

A sequence’s unallocated cached value are lost if the instance shuts down

Sequences can always have gaps

Two or more tables cannot have keys generated from the same sequence

A sequence can only be dropped by a DBA

ORDER BY 2. cust _id

ORDER BY 2,

ORDER BY "CUST^NO

ORDER BY "Last Name

ORDER BY CUST_NO

The AVG function implicitly converts NULLS to zero.

Aggregate functions can be nested to any number of levels.

The MAX and MIN functions can be used on columns with character data types.

Aggregate functions can be used in any clause of a SELECT statement.

second normal form

first normal form

third normal form

fourth normal form

It falls unless the expression is modified to substr (tociiar (Trunc (svsdate) ) , 1, 5).

It fails unless the expression is modified to to_char (Substr (sysdate, 1, 5) ) .

It fails unless the expression is modified to substr (to_char (sysdate) , 1, 5S).

It executes successfully with an implicit data type conversion.

A user can be the owner of multiple schemas In the same database.

The database guarantees read consistency at select level on user-created tables.

Updates performed by a database user can be rolled back by another user by using the rollback
command.

A query can access only tables within the same schema.

When you execute an update statement, the database Instance locks each updated row.

A SELECT statement using the COUNT function with a DISTINCT keyword cannot have a WHERE
clause.

COUNT(DISTINCT inv_amt) returns the number of rows excluding rows containing duplicates and
NULLs in the INV_AMT column.

COUNT(inv_amt) returns the number of rows in a table including rows with NULL in the INV_AMT
column.

COUNT(*) returns the number of rows including duplicate rows and rows containing NULL value in
any column.

It can only be used for NUMBER data types.

DELETE order_id FROM orders WHERE order_total < 1000;

DELETE FROM orders WHERE order_total < 1000;

DELETE orders WHERE order_total < 1000;

DELETE * FROM orders WHERE order_total < 1000;

DELETE FROM orders;