C9050-042 試験問題を無料オンラインアクセス

What characterizes the relational model with respect to data storage?

• A.Data is stored in tables.
• B.Data is stored in hierarchies.
• C.Data is stored in segments.
• D.Data is stored in variable length and format.

In which of the following cases is a performance analyzer tool NOT useful?

• A.To identify the code causing a storage overlay
• B.To locate program hangs and deadlocks
• C.To time and tune programs
• D.To show the frequency and duration of function calls

Given the following declaration, what declaration of B would cause the structure Ato be invalid?
DCL K FIXED BIN (31) VALUE (10);
DCL P POINTER;
DCL 1 A BASED (P),
2 B FIXED BIN(31),
2 C DIM (K REFER (B)),
3 D FIXED BIN(31),
3 E CHAR (4);
ALLOCATE A;

• A.2B FIXED BIN(31) INIT (20),
• B.2B FIXED BIN (31),
• C.2B FIXED BIN(31) INIT (10),
• D.2B FIXED BIN (31) INIT (K),

Given the following code, what are the default attributes of DSET1 after the READ statement?
DCL DATA CHAR (80);
DCL DSET1 FILE;
READ FILE(DSET1) INTO(DATA);

• A.KEYED RECORD INPUT
• B.DIRECT INPUT
• C.SEQUENTIAL RECORD INPUT
• D.STREAM INPUT

Which of the following declarations uses the LEAST memory?
DCL 1 S1 ALIGNED,
2 A CHAR(3),
2 B BIN FIXED(31),
2 C DEC FIXED(5),
2 D BIN FIXED(15);
DCL 1 S2 UNALIGNED,
2 A CHAR(3),
2 B BIN FIXED(31),
2 C DEC FIXED(5),
2 D BIN FIXED(15);
DCL 1 S3 ALIGNED,
2 B BIN FIXED(31),
2 A CHAR(3),
2 D BIN FIXED(15),
2 C DEC FIXED(5);
DCL 1 S4 ALIGNED,
2 D BIN FIXED(15),
2 A CHAR(3),
2 B BIN FIXED(31),
2 C DEC FIXED(5);

• A.S1
• B.S2
• C.S3
• D.S4