Section 19.4 talks about how to change the recovery algorithm to make savepoints and to roll back to a savepoint. Section 19.9.3 talks about save points.
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Section 19.4 talks about how to change the recovery
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- Write a program to test the class LinkedBag. For example create a bag by asking the user for few names then 1.Put those names in the bag. 2. ask the user for a name and delete it from the bag. 3. ask for a name and check whether it is in the bag or not 4. print all names in the bag. Hello! I'll appreciate a simple easy program with comments explaining the steps. Thanks for the help!comments what parts of the code do and why. import sysfrom PyQt5.QtCore import *from PyQt5.QtWidgets import *from PyQt5.QtWebEngineWidgets import *class MainWindow(QMainWindow):def __init__(self):super(MainWindow, self).__init__()self.browser = QWebEngineView()self.browser.setUrl(QUrl('http://google.com'))self.setCentralWidget(self.browser)self.showMaximized()# navbarnavbar = QToolBar()self.addToolBar(navbar)back_btn = QAction('Back', self)back_btn.triggered.connect(self.browser.back)navbar.addAction(back_btn)forward_btn = QAction('Forward', self)forward_btn.triggered.connect(self.browser.forward)navbar.addAction(forward_btn)reload_btn = QAction('Reload', self)reload_btn.triggered.connect(self.browser.reload)navbar.addAction(reload_btn)home_btn = QAction('Home', self)home_btn.triggered.connect(self.navigate_home)navbar.addAction(home_btn)self.url_bar =…Java Netbeans
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