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Share some Database Application Development 1Z0-148 exam questions and answers below.
Which two blocks of code execute successfully?
A. DECLARESUBTYPE new_one IS BINARY_INTERGER RANGE 0..9;my_val new_one;BEGINmy_val :=0;END;
B. DECLARESUBTYPE new_string IS VARCHAR2 (5) NOT NULL;my_str_new_string;BEGINmy_str := ‘abc’;END;
C. DECLARESUBTYPE new_one IS NUMBER (2, 1);my_val new_one;BEGINmy_val :=12.5;END;
D. DECLARESUBTYPE new_one IS INTEGER RANGE 1..10 NOT NULL;my_val new_one;BEGINmy_val :=2;END;
E. DECLARESUBTYPE new_one IS NUMBER (1, 0);my_val new_one;BEGINmy_val := -1;END;
Answer: A,D
Which data dictionary view contains the list of procedures and functions defined within package specification that you can execute?
A. ALL_SOURCE
B. ALL_DEPENDENCIES
C. ALL_OBJECTS
D. ALL_PROCEDURES
E. ALL_PLSQL_OBJECT_SETTINGS
Answer: D
Which statement is correct about DBMS_LOB.SETOPTIONS and DBMS_LOB.GETOPTIONS for SecureFiles?
A. DBMS_LOB.GETOPTIONS can only be used for BLOB data types.
B. DBMS_LOB.SETOPTIONS can perform operations on individual SecureFiles but not an entire column.
C. DBMS_LOB. SETOPTIONS can set option types COMPRESS, DUPLICATE, and ENCRYPT.
D. If a table was not created with compression specified in the store as securefile clause then DBMS_LOB.SETOPTIONS can be used to enable it later.
Answer: D
Which two statements are true about the DBMS_ LOB package?
A. DBMS_LOB.COMPARE can compare parts of two LOBs.
B. DBMS_LOB.COMPARE returns the size difference of the compared LOBs.
C. DBMS_LOB.COMPARE is overloaded and can compare CLOBs with BLOBs.
D. If the destination LOB is a temporary LOB, the row must be locked before calling DBMS_LOB.CONVERTTOBLOB.
E. Before calling DBMS_LOB.CONVERTTOBLOB, both the source and destination LOB instances must exist.
Answer: D,E
Identify the two correct scenarios where a function can be optimized using the function result cache feature.
A. A function which inserts multiple records into a DEPARTMENTS table as part of one-time data setup for an HR application.
B. A function which accesses multiple tables and calculates the commission to be given to a sales representative based on the number of products sold by that representative.
C. A function which deletes all the records from an EMPLOYEES_AUDIT table based on their LOG_DATE.
D. A function which updates the SALARY of all the employees in an EMPLOYEES table by a fixed percentage based on their DESIGNATION.
E. A function which calculates the factorial of a given number without accessing any table.
Answer: D,E
Which statement is true about internal and external LOBs?
A. An external LOB can be loaded into an internal LOB variable using the DBMS_LOB package.
B. A NOEXIST_DIRECTORY exception can be raised when using internal and external LOBs.
C. Internal and external LOBs can be written using DBMS_LOB.
D. After an exception transfers program control outside a PL/SQL block, all references to open external LOBs are lost.
E. When using DBMS_LOB.INSTR for internal and external LOBs, DBMS_LOB.OPEN should be called for each LOB.
Answer: D,E
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