default database, 4-24 default file name extensions, 16-38 default name mapping, 16-38 DEFINE precompiler option, 9-16 used in application migration, 3-8 DELETE CASCADE, 11-21 DELETE command, F-30 embedde
Meaning No Don't create an index on this field (or delete the existing index) Yes (Duplicates OK) Create an index on this field Yes (No Duplicates) Create a unique index on this field If you create a unique index, Access doesn't allow you to enter a new valu...
The interface IAddProviderMessageService enables different providers to add messages of type LoginMessageData IAdminBase - Interface in com.sap.portal.pcm.admin The interface that is the entry point to all administration interfaces. IAdministration - Interface in com.sapportals.portal.pcd.gl.admin...
There's potentially much less I/O to execute the query, if the index is narrow enough when compared to the rows and columns in the table itself, meaning it's a real subset of the total columns. Consider covering indexes when selecting a small portion of a large table, and where...
A machine can learn, for example, that the word “portable” is similar to “handheld”, “mobile”, and “phone”, all of which are near in meaning, but not necessarily synonymous. Search crawlers and APIs There are two primary ways to build a search engine index — a search crawler ...
They are all relevant in different ways, but none of them can be considered “accurate”. One user who types in “brad” might choose to go to Brad Pitt’s Wikipedia page, another might go to Brad Pitt’s IMDB page. Accuracy doesn’t really capture the meaning of these ...
Returns all sessions in the EIS that are considered active, meaning all sessions that haven't been stopped/expired. getActiveSessionsCache() - Method in class org.apache.shiro.session.mgt.eis.CachingSessionDAO Returns the cache instance to use for storing active sessions. getActiveSessionsCacheName...
Oracle Database Performance Tuning Guidefor more information about using composite indexes Unique and Nonunique Indexes Indexes can beuniqueor nonunique. Unique indexes guarantee that no two rows of a table have duplicate values in the key column or column. For example, no two employees can have...
All of the information that these spiders crawl is stored in Google’s index. Then, when a user performs a search, Google’s search algorithm sorts through its giant database to find the most relevant pages. Pulling from this established database (instead of attempting to find information in...
Provider 和 DefaultDatabase 属性示例 (VC++) Refresh 方法示例 (VC++) Resync 方法示例 (VC++) Save 和 Open 方法示例 (VC++) Seek 方法和 Index 属性示例 (VC++) Sort 属性示例 (VC++) Source 属性示例 (VC++) State 属性示例 (VC++) Status 属性示例 (VC++) ...