![]() ![]() This is my favorite view in Valentina Studio. In this view, different levels of entities (database, table, fields, links, indexes, etc) are displayed in columns in a cascading style. Selecting a database in column one, we can choose to display tables, links, views in column two and for tables, view its fields, indexes, etc in column three. We can also create and modify an entity accordingly.Īnother view, less used in my case, is the tree view: And the final level of details will be displayed in the right most pane. When a table is selected, it displays the table data in a grid view when a field is selected, only the column data is displayed. In the grid, we can right click on a record to export that record into CSV or SQL. We can double click a table in tree view or column view to bring up another view to see the master-child relationship. It also provides an SQL dialog, where we can input SQL statements. It has code insight and code completion features, which is quite handy. Generally speaking, Valentina Studio provides rich, but still in-much-need-of-improvement features. For example, it lacks filters and navigation whether you are in a grid view and/or SQL output view. Also, unlike PHPMyAdmin, after an operation (like inserting a field), it won’t provide an SQL statement for that operation. Likewise, when creating a table, it takes a longer process to define all the basics: fields, index, PK, etc with the UI. The definition of PK/FK is also less intuitive than in alternative apps. For example, when doing some tasks (say specifying the field type), we need to double click an arrow to bring up a pop up dialog while doing some other tasks (say changing the table’s DB engine, or its charset), we only need to single click. This inconsistency can confuse and annoy the end user.įinally, it is understandable to have features disabled in a free version. But the functionality difference between Valentina Studio Free and Pro is too big and somehow not really justified. I give Valentina Studio (Free and Pro) a score of 3.5 out of 5. They’re usable, but need work – especially to justify the $200 bill. Beginners will find the Free version good enough and can enjoy it at zero cost. The decision to upgrade to Pro or not can be made after some time of evaluation. Next, we will take a look at the Report module. This is probably the feature I consider the most interesting in Valentina Studio. To save the DataTableWalkthrough project, on the File menu, select Save All.Reporting has always been missing from my current book collection app so I will gladly demonstrate how to create a report of my book collections within PHP. A key icon appears next to the SongID column. To set the primary key, right-click the SongID column, and then click Set Primary Key. A primary key uniquely identifies a specific record in a data table. Repeat this process and add the following columns:Īll data tables should have a primary key. In the Properties window, set the DataType property to System.Int16. Visual Studio adds a file called DataSet1.xsd to the project and opens it in the Dataset Designer.ĭrag a DataTable from the DataSet tab of the Toolbox onto the Dataset Designer.Ī table named DataTable1 is added to the dataset.Ĭlick the title bar of DataTable1 and rename it Music. ![]() In the left-hand pane, select Data, then select DataSet in the middle pane. On the Project menu, select Add New Item. The DataTableWalkthrough project is created and added to Solution Explorer. Name the project DataTableWalkthrough, and then choose OK. In the middle pane, select the Windows Forms App project type. In Visual Studio, on the File menu, select New > Project.Įxpand either Visual C# or Visual Basic in the left-hand pane, then select Windows Desktop. For information on creating data tables that include TableAdapters, see Create and configure TableAdapters. This walkthrough explains how to create a DataTable (without a TableAdapter) using the Dataset Designer. Entity Framework provides a more natural way to work with tabular data as object models, and it has a simpler programming interface. ![]() ![]() NET applications use Entity Framework Core. Although datasets have proven to be a very successful technology, we recommend that new. They are especially useful for applications that enable users to modify data and persist the changes back to the database. NET technologies from the early 2000s that enable applications to work with data in memory while the applications are disconnected from the database. ![]()
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