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问题 How do I determine the functional dependency and the candidate key based on this case study? Course module and it can be performed by lecturer, student or visitor user. Course module consist of subject code and subject name. When admin creates course, it will store course ID, subject code, lecturer ID, course name, and ..... Students are required to enroll in the course and the course enrollment consist of registration ID, student information, date of enrollment, date of completion and....

问题 Hi I'm having a problem about referring to uploaded images in HTML. I'm using ImageField to save profile pictures : picture = models.ImageField(upload_to='stories/static/stories/profile_images/', blank=True) As you can see, It'll upload to <App folder>/static/stories/profile_images/ Then I refer it in HTML like this : <div class="profilepic" style="background-image: url('/{{ x.writer.picture }}');"></div> Which directs to ROOT/stories/static/stories/profile_images/.jpg Instead of ROOT/static

问题 I have an <option> list with items listed alphabetically. The problem is that the titles which come after the alphabetical characters are not vertically in line with each other. This can especially be seen in option this option: I. Huntington Theatre, which is too far to the left. Ideally I would like the alphabetical characters (a, b, c) to align right and the titles to align left. Any suggestions for aligning the first character of each title vertically? This is the code: <select id=

问题 Im already authenticating access to my API using a Firebase Auth token (JWT) which is passed inside the Http Authorization Header as Bearer token. This works fine using auto configuration. Now I want to map from the authentication to a user record in my DB. How do I need to adapt the security filter chain? This configuration is automatically applied by spring boot according to the docs and can be overridden: @Override protected void configure(HttpSecurity http) throws Exception { http

问题 I want to create a table using access vba with formatted fields. How do I format currency field with "standard" format while creating the table? Private Sub CreateTable_Click() DoCmd.RunSQL "CREATE TABLE Test( " & _ "[id] AUTOINCREMENT PRIMARY KEY, " & _ "[transaction_date] DATE, " & _ "[reference] TEXT(255)," & _ "[details] TEXT(255)," & _ "[debit] CURRENCY," & _ "[credit] INT);" End Sub 回答1: We use DAO for this. Here's an example. At the bottom, a Format is assigned to a field: ' Creates

问题 I have been using SQLitePCL (currently ver 3.8.7.2), and now decided to experiment with Delete and Update Cascade by turning on the Foreign Key constraint. I understand this feature is disabled by default and according to SQLite documentation, the constraint must be enabled separately for each database connection . The connection string only takes a database path (for SQLitePCL anyway) and doesn't allow more flexible composite connection string of the form data source=d:\foo\bar\mySqlite.db

问题 I just pulled and run the official Docker MySQL image and have it running locally on my machine: docker run --name mydb -e MYSQL_ROOT_PASSWORD=12345 -d mysql:5.7.11 The instructions on that screen tell you how to connect to the MySQL server (container) from inside yet another container (which is configured as a command-line client). But I have a generic JDBC fat client (SQuirreL) and am wondering how to connect to my docker container. For the JDBC connection string, I need to provide both a

问题 I want to create a table using access vba with formatted fields. How do I format currency field with "standard" format while creating the table? Private Sub CreateTable_Click() DoCmd.RunSQL "CREATE TABLE Test( " & _ "[id] AUTOINCREMENT PRIMARY KEY, " & _ "[transaction_date] DATE, " & _ "[reference] TEXT(255)," & _ "[details] TEXT(255)," & _ "[debit] CURRENCY," & _ "[credit] INT);" End Sub 回答1: We use DAO for this. Here's an example. At the bottom, a Format is assigned to a field: ' Creates

问题 Im building a p2p system when the peers are constantly listening for incoming connections (new peers) and sending commands through the terminal (user input) to the other peers. I am having difficulty looking for user input from the keyboard while always looking for new peers. print 'Listening...' while not shutdown: while sys.stdin in select.select([sys.stdin], [], [], 0)[0]: #look for keyboard input... not working line = sys.stdin.readline() if line: send_message(line) else: # an empty line

问题 We are using the SharpDX .NET wrapper to make Mediafoundation decode an MP4 Video into a DirectX9 texture. This works fine, except that it crashes on certain NVIDIA cards for example the 940MX . For example the same machine with an Intel HD graphics card decodes the video stream fine. Unfortunately we cant get any other details than a E_FAIL/Unspecified error from SharpDX . Even with the debug layer enabled. Any ideas how to find out why it crashes? VideoMediaType outputVideoFormat;