C1000-135 Dumps
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IBM Certified Developer - IBM i 7.x
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Which command would you use to display the source code of a program while debugging it in IBM i, allowing you to see the code as it executes?
DSPPGM
DSPSRC
STRDBG
DSPSRC
Answer: C
nation: The STRDBG command initiates debugging and allows developers to display the sou
the program as it executes, enabling effective troubleshooting.
QL stored procedure, what is the effect of using the SET TRANSACTION command, partic ing isolation levels?
ermanently changes the isolation level for the entire database session. automatically set to READ COMMITTED unless explicitly defined otherwise. ust be used in conjunction with a COMMIT or ROLLBACK statement.
llows for setting the isolation level only for the current transaction, impacting data visibility behavior.
er: D
nation: The SET TRANSACTION command is used to define the isolation level for the curr ction only, which affects how data is read and written during that transaction. This allows for
control over data visibility and concurrent access.
i, different authorities govern user access and capabilities within the system. Which of the ing types of authority allows a user to perform all administrative functions, including the abi nd delete user profiles?
LLOBJ
code of
In a S ularly
regard
It p
It is
It m
It a and
locking Answ
Expla ent
transa greater
In IBM
follow lity to
create a
*A
*SAVSYS
*SECADM
*JOBCTL
Answer: C
Explanation: The *SECADM authority is specifically designed for security administration, granting the user the ability to manage user profiles and other critical security functions.
In Db2 for i, which of the following SQL functions is used to retrieve the first non-null value from a list of expressions, making it particularly useful for substituting default values in queries?
NVL()
COALESCE()
ISNULL()
FIRST()
nation: The COALESCE() function returns the first non-null value from the provided list of sions, making it useful for handling optional data and ensuring that queries return meaningfu
stored procedures, when should you prefer using a CURSOR FOR UPDATE clause, and w ation does it have on data manipulation?
hould be used when you want to read data without modifying it.
nables updates to be made directly to the rows returned by the cursor while preventing other ctions from modifying them.
llows for the retrieval of data only, without any locking mechanisms.
exclusively for read-only operations and has no implications on data manipulation. er: B
nation: The CURSOR FOR UPDATE clause is used when you intend to retrieve data that wi uently be updated. It locks the rows returned by the cursor, preventing other transactions fro ying them until the current transaction is completed.
onsidering the various shells available on IBM i, it's essential to understand their specific onalities and use cases. Which shell is primarily designed for running commands in a manner
expres l
results.
In SQL hat
implic
It s
It e transa
It a
It is Answ
Expla ll
subseq m
modif
When c functi
similar to Unix, supporting features like piping and redirection?
QSYS2 Shell
PASE (Portable Application Solutions Environment)
STRQSH (Start Qshell)
QSH (Qshell) Answer: D
Explanation: QSH (Qshell) is the shell designed for Unix-like command execution, supporting piping and
redirection, making it suitable for users familiar with Unix environments.
When developing applications on IBM i 7.x using PASE, what is the primary consideration when integrating native IBM i features with PASE programs?
Ensuring all PASE applications run exclusively in the PASE environment without any IBM i integration.
ng only PASE-compatible libraries to avoid conflicts with native functions. miting the use of IBM i features to avoid complicating the PASE environment.
er: B
nation: When integrating native IBM i features with PASE programs, it is essential to under rformance implications of crossing boundaries. This knowledge helps developers optimize th ations and manage resource usage effectively.
ms of inputs, which of the following is an example of "interactive input" as opposed to "stati
onfiguration file read during application startup. cheduled data import from a CSV file.
ser filling out a form on a web application.
atch job processing records at predetermined intervals. er: C
nation: Interactive input is characterized by real-time user interaction, such as filling out a fo tatic input refers to data that is not modified until the next scheduled update.
Usi
Li
Answ
Expla stand
the pe eir
applic
In ter c
input"?
A c
A s
A u
A b
Answ
Expla rm,
while s
Developers migrating applications to IBM i must understand the differences between library and IFS storage. Which of the following statements correctly describes how the backup and recovery processes differ between libraries and IFS?
Libraries can only be backed up using BRMS, while IFS can use any backup utility.
IFS does not support incremental backups, while libraries do.
Both libraries and IFS have the same backup process but differ in file access methods.
Libraries are backed up through system-level commands, while IFS requires user-defined scripts.
Answer: C
Explanation: The backup processes for libraries and IFS are fundamentally similar, using system-level commands for backup, while their access methods differ based on their organizational structure.
In the context of IBM i shells, which shell would you use to execute commands that require the execution of native Linux applications, particularly those requiring complex scripting capabilities?
RQSH SE
YS2 Shell er: C
nation: PASE is the appropriate shell for running native Linux applications and executing co as it is designed for such environments.
the primary role of the "ROLLBACK" statement in the context of embedded SQL transact rograms?
inalizes the changes made during the transaction and saves them to the database.
everts the database to a previous state and discards all changes made during the transaction. auses the transaction, allowing for further changes.
rovides a way to review changes before committing. er: B
nation: The "ROLLBACK" statement is used to revert the database to its previous state by ding all changes made during the transaction, effectively undoing any operations performed.
QSH ST PA QS Answ Expla mplex scripts, What is ions in RPG p It f It r It p It p Answ Expla discar When developing ILE RPG applications, which of the following statements accurately describes the importance of the "CRTDSK" command in the context of data structure initialization and management? CRTDSK is only used for defining static data structures. CRTDSK is essential for defining data structures that can manage file records efficiently. CRTDSK allows for dynamic allocation of data structures during runtime. CRTDSK is irrelevant in the context of ILE RPG programming. Answer: B Explanation: The CRTDSK command is essential for defining data structures that can efficiently manage file records, which is crucial for ILE RPG applications that perform file I/O operations. When defining procedures within an ILE service program, which of the following is the correct way to ensure that a procedure is callable from other ILE programs? Procedures must be defined as *EXPORT to be callable from external programs. ine the procedure with the *PUBLIC attribute. cedures must be compiled in the same source file as the calling program. er: A nation: To ensure that a procedure within an ILE service program is callable from external ms, it must be explicitly defined with the *EXPORT attribute, which marks it for external a xecution of SQL stored procedures, how does the SET statement differ from the SELECT INTO ent when assigning values to variables? SET statement can only assign scalar values, while SELECT INTO can assign multiple val SELECT INTO statement is used for row-based assignments, while SET is for single value ments. SET statement does not allow for error handling, whereas SELECT INTO does. SELECT INTO statement can retrieve values from multiple tables, while SET cannot. er: B nation: The SELECT INTO statement is used for row-based assignments and can retrieve mu ns into variables, while the SET statement is typically used for single scalar value assignmen them suitable for different scenarios in SQL stored procedures. No special attributes are needed; all procedures are public by default. Def Pro Answ Expla progra ccess. In the e statem The ues. The assign The The Answ Expla ltiple colum ts, making Which of the following types of outputs is generated from a data processing system and is primarily intended for decision-making and operational support? Transaction Output Error Logs Diagnostic Messages Summary Reports Answer: D Explanation: Summary Reports provide aggregated information that supports decision-making and operational analysis, distinguishing them from transactional outputs that detail individual transactions. What is the significance of using OUT parameters in SQL stored procedures, and how do they differ from IN parameters in terms of data flow? T parameters can only be used to return multiple result sets. T parameters must be defined as NOT NULL to ensure data integrity. T parameters allow the procedure to return values to the caller, while IN parameters are use ut. er: D nation: OUT parameters in SQL stored procedures are specifically designed to return values while IN parameters are used solely for input. This distinction allows for a clear data flow b ocedure and its caller. eveloping applications on IBM i, which of the following statements best describes the relat en SQL and Record Level Access (RLA) in terms of data retrieval efficiency? SQL is inherently slower than RLA for data retrieval. A allows for more flexible data manipulation than SQL. A is the only method for accessing data in RPG. SQL provides more powerful data retrieval capabilities and can optimize queries better than RL er: D nation: SQL provides more powerful and optimized data retrieval capabilities compared to RQuest
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