But this isn’t an issue in practice, because there’s nothing stopping you from adding other constraints (using the unique_together model option or creating the constraint directly in your database), and enforcing the uniqueness at that level. Single-column primary keys are needed for things such as the admin interface to work; e.g., you need a simple way of being able to specify an object to edit or delete.

Depending on configuration, a single XyLoc Key can unlock one or multiple computers. For example, a system administrator's Key can be authorized to operate every XyLoc system in the company or the system administrator can authorize a manager's Key to work on every computer in a specific department. See similar questions...

The ethnic designation titled "Multiple or no Response" is an interim measure to collect aggregated data from districts that have decided to allow parents, students, or classified staff to identify more than one race or ethnicity or to not make an identification. Since the federal standards specify allowing individuals to identify more than one race, we felt it was important to allow districts additional flexibility in reporting. See similar questions...

Secondary sources, written by historians, are usually more focused than tertiary sources. They are generally built on research among primary and/or secondary sources, and tend to promote a certain interpretation or understanding of a particular event, moment, or theme in the past. I find it useful to introduce a distinction between secondary and tertiary sources. See similar questions...

No. The API's Terms and Conditions restrict you one account for your personal use. Users who attempt to create more than one account are subject to being banned from the Google SOAP Search API service. See similar questions...

Yes, a primary key can have as many fields as the developer feels is necessary, just make sure that each field you specify as the primary key, you also specify a matching field in the bean class. A primary key is simply one or more attributes which uniquely identify a specific element in a database. Also, remember to account for all fields in the equals() and hashCode() methods. See similar questions...

The IColumnFilter interface can also be used to determine which columns are primary keys instead of using DatabaseMetaData.getPrimaryKeys(). This can be useful if your primary keys are not explicitly defined in your database model. IDatabaseConnection connection = new DatabaseConnection(jdbcConnection); connection.getConfig().setProperty( "http://www.dbunit.org/properties/primaryKeyFilter", new MyPrimaryKeyFilter()); See similar questions...

Primary key is a normal column adapted to special purposes. Reference is an initially special mechanism, which has much less to do with object properties. In other words, reference is NOT a column or dimension. It is a separable part of an object, which is intended to represent the source object in another space. In fact, reference may have properties (both its own and object's) but the difference from primary key is in the role of the identifier. See similar questions...

In the two-level concept-oriented data model there exist only one root element, a number of concepts each having a number of items where items are identified via their references. Item references have system default format. In the case the default format is a restriction for developing a model, it is possible to define an arbitrary format of item references as a set of fields. This new format is analogous to primary keys. See similar questions...

On the multiple results page, check the target protein sequences, select the "Exon-Intron Diagram" option from the drop-down list on the top of the page, then click on "Make It So". See similar questions...

Multiple soundcards are indeed supported by the kX driver. In theory, an unlimited number of soundcards could be used at once, but in reality you're likely to be limited by the number of PCI slots in your machine. Any combination of EMU10k1 and/or EMU10k2-based cards can be used with the kX driver (together with soundcards by other manufacturers, running their own drivers), provided the BIOS and the OS recognize the cards and assign the resources correctly. See similar questions...

No, the USB port will support only one user. If you need to support multiple computers you need to use the Ethernet port and a hub/switch. See similar questions...

the moment Carman has only been tested with Brazilian cars, and only with the standard OBD-II PIDS. We are working in a new feature called car "profile" that will allow further customization to be done in Carman so it can handle better the different car Models. But, as we do not have any access to most available cars, we will need the community help to provide information on that. Please see the question "How can I contribute to Carman project?" See similar questions...

Web Support provides fast, complete answers to technical questions to help your customers get more from their investment in Autodesk software. Interactive contact with Autodesk product experts right at the desktop will improve customer productivity and help avoid expensive downtime. See similar questions...

Again, it is always hard to make fair comparisons, especially when you are from one side and when you don't have an intimate knowledge of the other side. Our general feeling is that django was not built with REST principles at its core. The project hasn't reach the final 1.0 version yet, but so far there doesn't appear to be any specific REST support even though, as a generic Web framework django can perfectly be used to build RESTful applications. See similar questions...

Yes. World Online has been using Django for more than two years. Sites built on Django have weathered traffic spikes of over one million hits an hour and a number of Slashdottings. Yes, it’s quite stable. Yes. Compared to development time, hardware is cheap, and so Django is designed to take advantage of as much hardware as you can throw at it. See similar questions...

Textbooks for grades 5 and 6 have answer keys in the back for only the practices and reviews, but not for the learning tasks. Answer key booklets for Primary Mathematics 3rd Edition are also available for all the textbooks and workbooks in two booklets - one for Primary 1-3 and one for Primary 4-6. Answers or answer keys are found in the teacher's guides and home instructor's guides. If you are purchasing these guides, you may not need the answer key booklets. See similar questions...

All requests for keys should be sent by fax or campus mail only with the building coordinator or dean's signature. Include the amount of keys, room/s the keys are for, account number, and any other pertinent information. Note: key requests cannot be sent through e-mail. See similar questions...