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Oracle PL/SQL
Oracle PL/SQL

... create or replace trigger only_nulls after update on BOOK for each row when (old.price is null) -- notice the colon with OLD is not used here ...
Introduction to Spatial Databases
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... What is a SDBMS ? A SDBMS is a software module that can work with an underlying DBMS supports spatial data models, spatial abstract data types (ADTs) and a query language from which these ADTs are callable supports spatial indexing, efficient algorithms for processing spatial operations, and domain ...
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... Each EPISuite workstation is linked to the central SX 8000 SQL database on the file server through an ODBC (Open Database Connectivity) driver. Once linked to the same database as the SX 8000 workstations, any changes made to personnel records at an EPISuite workstation are viewable at the SX 8000 w ...
Oracle Database as a Service (DBaaS)
Oracle Database as a Service (DBaaS)

... will sit weekly and changes shall be carried out during the subsequent change window. Configuration changes that cause a reboot/downtime but are deemed urgent shall not impact Availability metrics and SLAs and the associated charging mechanism. Customers requiring major version upgrades of the datab ...
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... • MATCH returns the position of the matched value within lookup_array, not the value itself. • MATCH does not distinguish between uppercase and lowercase letters ...
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... cumbersome to use. Some twenty years ago, I described it as “probably the worst designed SAS product of the decade”. This was because in SAS Version 6 it was necessary first to create an Access descriptor to describe the data in a single DBMS table and then create a second View descriptor to define ...
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... In PC File Formats for SAS version 7 and higher there is new support forMS Access and Excel 97. Also, PROC IMPORT and PROC EXPORT are available as standalone procedures, not just as menu items. The new release also includes the CV20DBC conversion utility, since Access to SQL Server no longer availab ...
Program Title: Academy of Database and Programming Essentials
Program Title: Academy of Database and Programming Essentials

... during the term of the internship for the purpose of evaluating the student's progress in attaining the competencies listed in the job performance skills plan and in determining the student's grade for the internship course. Federal and state legislation requires the provision of accommodations for ...
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Oracle Database In-Memory with Oracle Database 12c Release 2

... Population is a streaming mechanism, simultaneously columnizing and compressing the data. Just as a tablespace on disk is made up of multiple extents, the IM column store is made up of multiple InMemory Compression Units (IMCUs). Each worker process allocates its own IMCU and populates its subset of ...
The SQL Query Language COS 597A: Principles of Database and Information Systems
The SQL Query Language COS 597A: Principles of Database and Information Systems

... already seen IN, EXISTS and UNIQUE. Can also use NOT IN, NOT EXISTS and NOT UNIQUE.   Also available: op ANY, op ALL, op from >, <, =, ≥, ≤, ≠   Find names of branches with assets at least as large as the assets of some NYC branch: ...
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... • Use the SqlException class to handle errors • Use the SqlCommand class to execute commands against SQL Server • Use the ExecuteReader() method with a DataReader object to retrieve data from a data source • Use the SqlDataReader class to retrieve data from a SQL Server database ASP.NET Programming ...
VERITAS NetBackupTM 4.5 for Oracle for Solaris
VERITAS NetBackupTM 4.5 for Oracle for Solaris

Updating Legacy Databases through Wrappers: Data Consistency
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... unforeseen contexts, such as Web-based applications or federated systems. Data wrappers, and more specifically updating wrappers (that not only access legacy data but also update them), can provide external clients of an existing (legacy) database with a neutral interface and augmented capabilities. ...
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... you retrieve dimension collections by using Analysis Management Objects (AMO). If you start SQL Profiler and capture an Analysis Services server trace while querying, you will see a QuerySubcube event with very familiar information in the text column. That information is exactly the same as the data ...
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... identifying the relevant entities and the relationships between them and producing an entity-relationship diagram. ...
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... triggering event. This is the default.  For each row: the trigger body executes once for each row affected by the triggering event. When the trigger can be fired  Relative to the execution of an SQL DML statement (before or after or instead of it)  Exactly in a situation depending on specific sys ...
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Data cleaning, which
Data cleaning, which

... The major task of on-line operational database systems is to perform on-line transaction and query processing. These systems are called on-line transaction processing(OLTP)systems. Data warehouse systems, on the other hand, serve users or knowledge workers in the role of data analysis and decision m ...
(A) R - UCLA Computer Science
(A) R - UCLA Computer Science

Implementing a Taxonomy
Implementing a Taxonomy

... Implementing a Taxonomy – White Paper. December 2002. v 1.0 ...
< 1 ... 100 101 102 103 104 105 106 107 108 ... 492 >

Entity–attribute–value model

Entity–attribute–value model (EAV) is a data model to describe entities where the number of attributes (properties, parameters) that can be used to describe them is potentially vast, but the number that will actually apply to a given entity is relatively modest. In mathematics, this model is known as a sparse matrix. EAV is also known as object–attribute–value model, vertical database model and open schema.
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