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saw5 [17]
2 years ago
15

The ____ command can be used to view the contents of a record when it is anticipated that the record will need to be modified. I

t places a shared lock on the record(s) to be changed and prevents any other user from acquiring a lock on the same record(s).
A) SELECT...LOCK TABLE
B) COMMIT...LOCK TABLE
C) SELECT...FOR UPDATE
D) COMMIT...FOR UPDATE
Computers and Technology
1 answer:
GREYUIT [131]2 years ago
6 0

Answer:

The correct answer is B)

Explanation:

The commit command allows us to:

• Consolidate, confirm

• committing refers to the idea of confirming a set of provisional changes permanently.

• A popular use is at the end of a database transaction.

•

The LOCK TABLE command should be used:

• when a lock of the mode specified in the table can be acquired.

• The command will wait for everything you need to get the lock,

• In case you cannot acquire the lock immediately, the NOWAIT option is specified so that the command cancels the transaction.

You might be interested in
According the Keown book, which Web-based personal financial planning website is known as "the best free way to manage your mone
daser333 [38]

Answer:

Mint.com

Explanation:

Mint.com: It is a free, and web-based personal management service that manages finance in the US and Canada, and has been developed by Aaron Patzer. It at the beginning used to leverage users to link various of their financial accounts via the deal with the Yodlee, however, since then it has started to take the services of the intuit to connect all the financial accounts of a user altogether.

The Level Money provides the details that help in understanding the cash flow through the automatic income detection and expenses that are fixed.

WSJ.com

This site provides the latest news.

YahooFinance.com

And this one provides the stock quotations for free, latest news, social interaction and mortgage rates, and resources for portfolio management.

Hence, the correct option is Mint.com. And we can find this in  Keown book as well.

4 0
3 years ago
T F Changes to a function parameter always affect the original argument as well.
Leya [2.2K]

Answer:

False

Explanation:

"When the function addition is called, [...] any modification will not have any effect [...]in the values outside it, because variables x and y were not themselves passed to the function, but only copies of their values at the moment the function was called."

Reference: Cplusplus.com. “Functions (II).” Cplusplus.com, 2019,

6 0
3 years ago
Write a for loop to print all elements in courseGrades, following each element with a space (including the last). Print forwards
ozzi

Answer:

The missing part of the code is:

for (i = 0; i < courseGrades.length; ++i) {

           System.out.print(courseGrades[i]+" ");         }

       System.out.println();

       for (i = courseGrades.length-1; i >=0 ; --i) {

           System.out.print(courseGrades[i]+" ");         }

       System.out.println();

Explanation:

This iterates through the array

for (i = 0; i < courseGrades.length; ++i) {

This prints each element of the array followed by a space

           System.out.print(courseGrades[i]+" ");         }

This prints a newline at the end of the loop

       System.out.println();

This iterates through the array in reverse

       for (i = courseGrades.length-1; i >=0 ; --i) {

This prints each element of the array (reversed) followed by a space

           System.out.print(courseGrades[i]+" ");         }

This prints a newline at the end of the loop

       System.out.println();

6 0
3 years ago
Sam wants to move from his current role in his organization to a managerial role. Which certification will help him get on a man
jolli1 [7]

CCIE refers to Cisco Certified Internetwork Expert, a technical certification that demonstrates high proficiency of managing and establishing computer networks.

CSPM may refer to Certified Security Project Manager, which is a certification to demonstrate the individual’s capability in managing project in the field of cybersecurity.

MCITP refers to Microsoft Certified IT Professional, which demonstrates an individual’s ability to be a database or enterprise messaging administrator.

Oracle DBA refers to Oracle Database Administrator, and this certification demonstrates an individual’s ability to manage Oracle’s database from retrieving, maintaining, and editing them.

While PMP refers to Project Management Professional certification, one that you can use to prove your abilities as a project manager in various business contexts.  

Thus, the best certification for him to use to get to a managerial career path is PMP.

4 0
2 years ago
How do I find a space in my String and replace it? JAVA
Fantom [35]

Answer:

This article shows how to use regex to remove spaces in between a String.

A string with spaces in between.

String text = "Hello World Java.";

We want to remove the spaces and display it as below:

Hello World Java.

1. Java regex remove spaces

In Java, we can use regex \\s+ to match whitespace characters, and replaceAll("\\s+", " ") to replace them with a single space.

Regex explanation.

`\\s` # Matches whitespace characters.

+ # One or more

StringRemoveSpaces.java

package com.mkyong.regex.string;

public class StringRemoveSpaces {

public static void main(String[] args) {

String text = "Hello World Java.";

String result = text.replaceAll("\\s+", " ");

System.out.println(result);

}

}

Output

Terminal

Hello World Java.

8 0
3 years ago
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