Import from Excel and overwrite primary key records
Each database table must have a field or a combination of fields that holds a value that uniquely identifies each record. For example, a customer number would uniquely identify each customer. This field or fields are called the primary key of the table. The primary key serves several purposes in a RDBMS. Because the value is unique, it ensures there are no duplicate records in the database. The primary key is also used to establish table relationships and, thereby, connect the data in related records held in different tables. Records are stored in order by the primary key.
The Access application uses the primary key to identify each item in a database table. When you set or change the key, you modify the ID number that the program uses to match records from one table to another. Here's how to set or change the key.
A primary key in a relational database uniquely identifies each record. To remove the primary key in Access 2003, you first must familiarize yourself with the program's basic functionality. Read on to learn more.
Every table in your database should have a primary key a field or set of fields with a unique value for each record stored in the table. You can use the primary key to identify and refer to each record.
Access can automatically create a primary key field for you when you create a table, or you can specify the fields that you want to use as the primary key. This article explains how and why to use primary keys.
One of the reasons to create a primary key is to use it to create table relationships.
A primary key is a field or combination of fields that uniquely identify a record in a table, so that an individual record can be located without confusion.
A foreign key (sometimes called a referencing key) is a key used to link two tables together. Typically you take the primary key field from one table and insert it into the other table where it becomes a foreign key (it remains a primary key in the original table).
Related Applications & Scripts
EMS Data Import for DB2 is a powerful tool to import data to DB2 tables from MS Excel 97-2007, MS Access, DBF, XML, TXT, CSV, MS Word 2007, RTF, ODF and HTML files. It provides adjustable import parameters, including source data formats for all the fields and destination DB2 data formats for the selected fields, commit options, number of records to skip, etc. Data Import for DB2 includes a wizard, which allows you to set all the DB2 import options for different files visually, and a command-line utility to execute import to DB2 database in one-touch.
- Import from 10 most popular formats: MS Excel 97-2007, MS Access, XML, DBF, TXT, CSV, MS Word 2007, OpenDocument Format and HTML
- Importing data to one or several tables or views from different databases
- A number of import modes - Insert All, Insert New, Insert or Update, and others
- Adjustable import parameters for each source file
- Saving all import parameters set on current wizard session
- Automatic creation of the table structure
- Command-line utility to import data using the configuration file
- Powerful visual options module
DTM Data Editor is a data viewer and editor for database professionals who are tired of wasting their time on mundane tasks. The program uses form-based interface and works with any ODBC, IDAPI and OLE DB data source. SQL statements are generated automatically and can by modified later. For data that has foreign key - primary key relation, there are options to enter values manually or select them from a list, which is much faster.
Supports most popular desktop formats (Access, Paradox, DBF and Excel) as well as simultaneous connections using ODBC, OLE DB or Oracle Call Interface.
Smart search, filtering and sort functions help you to customize data presentation for more comfortable work.
Data Editor allows you to save individual settings for each database table.
The program supports Export, Preview and Import for Large objects (BLOBs).
DTM Data Editor is a true Win32 application, supports Windows 2000/XP/Vista/7 and Server 2003/2008.
This is a PHP5 class that will allow you to generate a key for an specific user and validate it. In the features, there are:
- It generates a 25 characters key
- You can change the length of the key that will be generated (default 25)
- You can set what characters do you want in the key (Default A-Z a-z 0-9 !@^$*()_+)
- You can set the file where will be saved the users/keys
- The key comes with rawurlencode(), this will allow you to pass the key trough an URL
- The system doesnt duplicates keys or usernames! If the entered username is repeated, the system will just return the existing key of the respective user
- You can use this wherever you want (Integration is too easy)
- You dont need database! And if you want, you can integrate this into a database
The finality is that you can easy implement this class to your API and allow the controlled use of it. With this class you only generate and validate keys, allowing to add whatever you want. For example, in the validating file you can save in a database each petition and control them!
This application can authenticate your google account and import all your gmail contact to flex. The authentication is fully secured and fast. The application also has the ability to export the contact to a csv file.
The code is fully Object Orientated and can be easily use is any project. The package comes with 3 classed and 2 interfaces and can be quickly plugged to your current project.
Key Manager is a simple application that stores all of your software keys (serials) in one central location which can be easily filtered. It provides a simple interface to add new, update existing and delete old keys.
The software has options for backing up the database and restoring from older versions. The software runs off a standalone database and has no external requirements other than the .net framework.