![]() ("Error! Connection Failed to DB" +e.getMessage()) String query = "insert into RecordsTable (ID,First_Name,Last_Name) values (3,'Test','Testerton')" String createTable = "CREATE TABLE IF NOT EXISTS RecordsTable (" String Lname = findTxtLastn(c).getText() ĭatabase ARdb = Display.getInstance().openOrCreate("RecordsDB.db") ![]() String Fname = findTxtFirstn(c).getText() I'm running some tests (there are around 10 values I would like to upload, however, just testing the connection ect by uploading ID, Fname and Lname values. ![]() If the tool categories are "hammer," "spanner," and "screwdriver," you can't add a record of type "chisel.I have developed a mobile application using the CodeName One plugin for Java in the Netbeans IDE. For example, in a database of workshop tools, you might have a table of individual tools and another table of tool categories. Foreign Key: A field or group of fields in a record that must match a key in another table.In most cases, you can leave this to the default value. Other options are NOCASE, which is case-insensitive, and RTRIM, which ignores trailing white space. Collation: Sqlite can use different methods of string comparison.For example, you might check that the value in a phone number field has at least 10 characters. Check: A field can have a check performed on it when a record is added.Default: A default value will be provided if a record is added that has no value in this field.U (Unique): This field in each record must hold a unique value, meaning there can't be any duplicates in this field in the table.We used this in the "id" field in the example we covered above. AI (Auto-Incrementing): Numeric fields can be automatically filled in, with the next highest unused value.There can only be one primary key in a table. In a table of user accounts, though, it might be a username. This might be a simple numeric value, like the auto-incrementing integer fields we covered above. PK (Primary Key): A field (or group of fields) that provides a unique identifier for the records in the table.If you try to add a record without providing a value for this field, it will be rejected. NN (Not Null): When this option is set, the field can't be left empty.The checkboxes and other options next to each field allow you to add the following behaviors: It simplifies your application's installation routines and lowers the minimum hardware requirements for your application. Having a capable, self-contained database engine tucked away inside your application removes a lot of problems. SQLite also has a command-line tool for manipulating databases, but it's the library that's made it a triumph. This means you don't have to provide an external SQL database server, like MySQL, MariaDB, or Microsoft SQL Server. The database engine becomes an integral part of the product. It's a fast, lightweight library that's incorporated (or linked, in developer-speak) in other applications. The incredible reach of the SQLite database is due to its architecture. It's also in every internet browser, including Chrome, Firefox, and Safari, as well as countless other applications. It's inside every iPhone and Android phone, and Windows 10 or Mac computer. Since its initial release in 2000, SQLite has seen an absolutely staggering uptake. So successful, in fact, it can justifiably call itself the most widely deployed database engine in the world. The SQLite database library and tools are a phenomenally successful open-source Structured Query Language (SQL) database project.
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