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1. Top results related to define view in database

   • View database in Derby inside java project

     Top Answer

     Answered May 23, 2017 · 1 votes

     How about adding the Derby-plugins to your ide, you can find it here.

     Also a similar one here How to browse a derby memory database with Eclipse Datasource Explorer?.

     But , i personally find this tutorial useful . Also have a look at this.

     Check all answers on Stack Overflow

     1/5

   • Define pagination page_size per-view in Django Rest Framework

     Top Answer

     Answered Jun 21, 2018 · 14 votes

     You can achieve something relatively clean:

     • Assuming you are setting the pagination per class with the pagination_class attribute.
     • Assuming that you keep the page_size attribute in your class.

     'DEFAULT_PAGINATION_CLASS': 'rest_framework.pagination.PageNumberPagination','PAGE_SIZE': default_page_size,

     class ACustomViewSet(mixins.ListModelMixin, mixins.DestroyModelMixin, viewsets.GenericViewSet): pagination_class = PageNumberPagination page_size = N pagination_class.page_size = self.page_size

     def list(self, request, *args, **kwargs): self.pagination_class.page_size = self.page_size ...

     • In your settings.py add a global pagination setting: 'DEFAULT_PAGINATION_CLASS': 'rest_framework.pagination.PageNumberPagination','PAGE_SIZE': default_page_size,You can handle with this all the views that have the same page size.
     • For any other view/viewset: class ACustomViewSet(mixins.ListModelMixin, mixins.DestroyModelMixin, viewsets.GenericViewSet): pagination_class = PageNumberPagination page_size = N pagination_class.page_size = self.page_sizeOr you can do this inside a method: def list(self, request, *args, **kwargs): self.pagination_class.page_size = self.page_size ...

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     2/5

   • View file stored in database using php on browser

     Top Answer

     Answered Dec 13, 2013 · 0 votes

     According to your code, $row[1] is "the filename". The Content type header should contain the content type instead, i.e. the file mime type, for example:

     header('Content-type: application/pdf');-

     If you want to add a filename:

     header('Content-type: application/pdf');header('Content-Disposition: attachment; filename='.$row[1]);print $data;-

     Be sure $data is the content of the file, something you can take from readfile() for example.

     Read more on the manual: http://php.net/manual/en/function.readfile.php

     Keep in mind that while PDF and images are easily viewable by a browser, I think Excel needs some ad hoc plugin for that.

     A more complete example right out of the manual, to get you a more thorough idea (not all those headers are necessary, and you should change others accordingly to your code):

     header('Content-Description: File Transfer');header('Content-Type: application/octet-stream');header('Content-Disposition: attachment; filename='.basename($file));header('Content-Transfer-Encoding: binary');header('Expires: 0');header('Cache-Control: must-revalidate');header('Pragma: public');header('Content-Length: ' . filesize($file));ob_clean();flush();readfile($file);exit;

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     3/5

   • View database user and password in PgAdmin

     Top Answer

     Answered Jan 11, 2018 · 17 votes

     In the file "pgpass.conf" in this path:

     C:\Users\[User's name]\AppData\Roaming\postgresql-

     Check all answers on Stack Overflow

     4/5

   • View contents of database file in Android Studio

     Top Answer

     Answered Dec 13, 2013 · 28 votes

     Finally, i found a simplest solution which do not need to open the DDMS.

     Actually, the solution is based on what @Distwo mentioned, but it don't have to be that complicated.

     First, remember the path of your database file in the device, it should aways the same. For example mine is:/data/data/com.XXX.module/databases/com.XXX.module.database

     Second, execute this command which pulls your database file onto you PC

     adb pull /data/data/com.XXX.module/databases/com.XXX.module.database /Users/somePathOnYourPC/

     What you need to do is just copy and store this command, then you can use it again and again.

     Third, if you got Permission Denied or something like that, just run adb root before the previous command.

     Other Answers

     Answered Nov 04, 2021 · 338 votes

     Viewing databases from Android Studio:

     Option 1:

     • ["Download and install SQLiteBrowser.","",""]
     • ["Copy the database from the device to your PC:",""," ","Android Studio versions < 3.0:",""," ","Open DDMS via Tools > Android > Android Device Monitor ","",""]
     • ["Click on your device on the left.","You should see your application:","","",""]
     • ["Go to File Explorer (one of the tabs on the right), go to /data/data/databases ","","",""]
     • ["Select the database by just clicking on it.","",""]
     • ["Go to the top right corner of the Android Device Monitor window. Click on the 'pull a file from the device' button:","","",""]
     • ["A window will open asking you where you want to save your database file. Save it anywhere you want on your PC.","",""]

     Android Studio versions >= 3.0:

     • ["Android Studio versions >= 3.0:",""," ","Open Device File Explorer via View > Tool Windows > Device File Explorer ","",""]
     • ["Go to data > data > PACKAGE_NAME > database , where PACKAGE_NAME is the name of your package (it is com.Movie in the example above)","",""]
     • ["Right click on the database and select Save As... . Save it anywhere you want on your PC.","",""]

     Now, open the SQLiteBrowser you installed. Click on 'open database', navigate to the location you saved the database file, and open. You can now view the contents of your database.

     • ["Now, open the SQLiteBrowser you installed. Click on 'open database', navigate to the location you saved the database file, and open. You can now view the contents of your database.","",""]

     Option 2:

     Go to this Github repository and follow the instructions in the readme to be able to view your database on your device. What you get is something like this:

     That's it. It goes without saying however that you should undo all these steps before publishing your app.

     Other Answers

     Answered Mar 23, 2015 · 207 votes

     Connect to Sqlite3 via ADB Shell

     I haven't found any way to do that in Android Studio, but I access the db with a remote shell instead of pulling the file each time.

     Find all info here: http://developer.android.com/tools/help/adb.html#sqlite

     1- Go to your platform-tools folder in a command prompt

     2- Enter the command adb devices to get the list of your devices

     C:\Android\adt-bundle-windows-x86_64\sdk\platform-tools>adb devicesList of devices attachedemulator-xxxx device

     3- Connect a shell to your device:

     C:\Android\adt-bundle-windows-x86_64\sdk\platform-tools>adb -s emulator-xxxx shell

     4- Navigate to the folder containing your db file:

     cd data/data/<your-package-name>/databases/

     5- run sqlite3 to connect to your db:

     sqlite3 <your-db-name>.db

     6- run sqlite3 commands that you like eg:

     Select * from table1 where ...;

     Note: Find more commands to run below.

     SQLite cheatsheet

     There are a few steps to see the tables in an SQLite database:

     .tables

     .schema tablename

     SELECT * FROM tablename;

     .help

     • ["List the tables in your database:","",""," .tables"," ",""]
     • ["List how the table looks:","",""," .schema tablename"," ",""]
     • ["Print the entire table:","",""," SELECT * FROM tablename;"," ",""]
     • ["List all of the available SQLite prompt commands:","",""," .help"," ",""]

     Check all answers on Stack Overflow

     5/5

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2. database.guide › what-is-a-viewWhat is a View? - Database.Guide

   database.guide › what-is-a-view

   • Cached

   May 24, 2016 · In the world of databases, a view is a query that’s stored on a database. The term can also be used to refer to the result set of a stored query. To create a view, you write a query, then save it as a view. To run a view, you query it, just like you’d query a table. The difference is that, the view itself is a query.

3. testsuite.io › database-viewsDatabase Views: What They Are, How They Work, and ... - Testsuite

   testsuite.io › database-views

   • Cached

   Jul 23, 2023 · What is a Database View. A database view is a query that is saved in the database. It acts as a virtual table that you can query just like any other table. A view can use joins and combine data from other tables too.

4. People also ask

   What is a database view?

   • A database view is a query that is saved in the database. It acts as a virtual table that you can query just like any other table. A view can use joins and combine data from other tables too. Learn AWS the easy way, become a leader on your team. Views can differ slightly depending on your database engine.

   Database Views: What They Are, How They Work, and When to Use them

   testsuite.io/database-views

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   What is a SQL view?

   • SQL views are virtual tables that are created using a SELECT statement in SQL. A view is a database object that acts as a filter to the data stored in one or more tables. It is a logical representation of data in a database that can be used to simplify the complexity of data and enhance security.

   SQL Views – SQL Tutorial

   www.sqltutorial.net/views.html

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   Why should you use a view in a database?

   • Views can present data in a simplified way. So data can be presented in a way that makes more sense to the user (rather than imposing the underlying table structure on them). Views can also help in cases where the table structure is changed. If a database’s table structure is changed, a view can make this seamless to the user.

   What is a View? - Database.Guide

   database.guide/what-is-a-view/

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   Why are SQL views important?

   • In conclusion, SQL views are useful for managing and manipulating data in a database. By creating virtual tables that act as filters to the data stored in one or more tables, views can simplify complex queries, enhance security, and improve the overall functionality of a database.

   SQL Views – SQL Tutorial

   www.sqltutorial.net/views.html

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5. stackoverflow.com › questions › 1278521sql - Why do you create a View in a database? - Stack Overflow

   stackoverflow.com › questions › 1278521

   • Cached

   Aug 14, 2009 · 513. A view provides several benefits. 1. Views can hide complexity. If you have a query that requires joining several tables, or has complex logic or calculations, you can code all that logic into a view, then select from the view just like you would a table. 2. Views can be used as a security mechanism.

   Usage example

   CREATE VIEW USERNAMES AS SELECT user_id, username FROM Table1;

   See more on stackoverflow

6. learn.microsoft.com › en-us › sqlViews - SQL Server | Microsoft Learn

   learn.microsoft.com › en-us › sql

   • Cached

   Oct 13, 2023 · A view is a virtual table whose contents are defined by a query. Like a table, a view consists of a set of named columns and rows of data. Unless indexed, a view does not exist as a stored set of data values in a database.

7. sql-academy.org › en › guideVIEW in SQL

   sql-academy.org › en › guide

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   A view is a database object that is the result of executing a query on the database, defined using the SELECT statement, at the time of accessing the view. Views are sometimes called "virtual tables." This is because a view appears to the user as a table, but actually does not store data, but retrieves it from other tables at the time of access.

8. www.sqltutorial.net › viewsSQL Views – SQL Tutorial

   www.sqltutorial.net › views

   • Cached

   A view is a database object that acts as a filter to the data stored in one or more tables. It is a logical representation of data in a database that can be used to simplify the complexity of data and enhance security. Syntax. Views can be created in SQL by using the CREATE VIEW statement. The syntax for creating a view is as follows:

9. www.sqltutorial.org › sql-viewsThe Ultimate Guide to SQL Views For The Beginners - SQL Tutorial

   www.sqltutorial.org › sql-views

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   SELECT column_list. FROM view_name; Code language: SQL (Structured Query Language) (sql) Views help you pack the data for a specific group of users. For example, you can create a view of salary data for the employees for Finance department. Views help maintain database security.