ADO Programming with Adaptive Server Anywhere.
... • Optimistic Locking: The lock is done on row by row basis, when Update is called. • Batch Optimistic Locking: The lock occurs when UpdateBatch is called. • Pessimistic Locking: The lock is done on the edited records at the data source. • Read Only Locking: There is no Locking and the data can’t be ...
... • Optimistic Locking: The lock is done on row by row basis, when Update is called. • Batch Optimistic Locking: The lock occurs when UpdateBatch is called. • Pessimistic Locking: The lock is done on the edited records at the data source. • Read Only Locking: There is no Locking and the data can’t be ...
Normalization-Anomalies
... doing, to safeguard the database against certain types of logical or structural problems, namely data anomalies. For example, when multiple instances of a given piece of information occur in a table, the possibility exists that these instances will not be kept consistent when the data within the tab ...
... doing, to safeguard the database against certain types of logical or structural problems, namely data anomalies. For example, when multiple instances of a given piece of information occur in a table, the possibility exists that these instances will not be kept consistent when the data within the tab ...
Oracle7 Server Release 7.3 Key Features:
... Nested-loop and sort-merge join selection "Star" query algorithm support Manual UNION ALL predicate push-down Histograms ...
... Nested-loop and sort-merge join selection "Star" query algorithm support Manual UNION ALL predicate push-down Histograms ...
value
... data. They can combine data from different tables, update your data, and perform calculations on your data. _____ control data entry and data views. They provide visual cues that make data easier to work with. _______ summarize and print your data. They turn the data in your tables and queries into ...
... data. They can combine data from different tables, update your data, and perform calculations on your data. _____ control data entry and data views. They provide visual cues that make data easier to work with. _______ summarize and print your data. They turn the data in your tables and queries into ...
SQL, MYSQL, DBI and ADO
... • Database management system (DBMS) – Provides mechanisms for storing and organizing data – Allows users to access and store data without addressing internal representation of databases ...
... • Database management system (DBMS) – Provides mechanisms for storing and organizing data – Allows users to access and store data without addressing internal representation of databases ...
(PPT, 514KB)
... General-purpose databases are usually developed by one organization or community of programmers, while a different group builds the applications that use it. In many companies, specialized database administrators maintain databases, run reports, and may work on code that runs on the databases themse ...
... General-purpose databases are usually developed by one organization or community of programmers, while a different group builds the applications that use it. In many companies, specialized database administrators maintain databases, run reports, and may work on code that runs on the databases themse ...
View Chapter 22 Database: SQL, MYSQL, DBI and ADO
... • Database management system (DBMS) – Provides mechanisms for storing and organizing data – Allows users to access and store data without addressing internal representation of databases ...
... • Database management system (DBMS) – Provides mechanisms for storing and organizing data – Allows users to access and store data without addressing internal representation of databases ...
SAS and ORACLE PL/SQL: Partners or Competitors'
... database you are using. It may be possible to utilize some of those to return information that would otherwise require a detailed knowledge of the database schema. It also increases the efficiency of the query when used in the WHERE clause to filter the data as opposed to retrieving the data into th ...
... database you are using. It may be possible to utilize some of those to return information that would otherwise require a detailed knowledge of the database schema. It also increases the efficiency of the query when used in the WHERE clause to filter the data as opposed to retrieving the data into th ...
Chapter 1: Introduction
... (correct) state despite system failures (e.g., power failures and operating system crashes) and transaction failures. • Concurrency-control manager controls the interaction among the concurrent transactions, to ensure the consistency of the database. Hankz Hankui Zhuo: http://www.zsusoft.com/~hankz ...
... (correct) state despite system failures (e.g., power failures and operating system crashes) and transaction failures. • Concurrency-control manager controls the interaction among the concurrent transactions, to ensure the consistency of the database. Hankz Hankui Zhuo: http://www.zsusoft.com/~hankz ...
Representing Weak Entity Sets
... columns for the primary keys of the two participating entity sets, and any descriptive attributes of the relationship set. E.g.: table for relationship set borrower ...
... columns for the primary keys of the two participating entity sets, and any descriptive attributes of the relationship set. E.g.: table for relationship set borrower ...
Document
... • Database management system (DBMS) – Provides mechanisms for storing and organizing data – Allows users to access and store data without addressing internal representation of databases ...
... • Database management system (DBMS) – Provides mechanisms for storing and organizing data – Allows users to access and store data without addressing internal representation of databases ...
Idaho1 - University of Tulsa
... Placing very severe restrictions on intermixing of types Variety of definitions for it ...
... Placing very severe restrictions on intermixing of types Variety of definitions for it ...
Class.forName(“sun.jdbc.odbc.JdbcOdbcDriver”)
... When Java first came out, this was a useful driver because most databases only supported ODBC access but now this type of driver is recommended only for experimental use or when no other alternative is available. ...
... When Java first came out, this was a useful driver because most databases only supported ODBC access but now this type of driver is recommended only for experimental use or when no other alternative is available. ...
Working with Data and ADO.Net
... ADO.NET is essentially a collection of .NET Classes that expose methods and attributes used to manage communication between an application and a data store. ...
... ADO.NET is essentially a collection of .NET Classes that expose methods and attributes used to manage communication between an application and a data store. ...
Data Pump
... • Optimizer able to use run-time statistics – exec dbms_stats.gather_system_statistics(…) – OPTIMIZER_DYNAMIC_SAMPLING ...
... • Optimizer able to use run-time statistics – exec dbms_stats.gather_system_statistics(…) – OPTIMIZER_DYNAMIC_SAMPLING ...
Blast Instructions
... here dbname is the name of the Tair database file and name is an arbitrary label given to the logfile. This command creates additional files associated with the Database, e.g. .phr, .pin, .psd, psi, .psq, .logfile. --the –p T indicates this is a protein database ...
... here dbname is the name of the Tair database file and name is an arbitrary label given to the logfile. This command creates additional files associated with the Database, e.g. .phr, .pin, .psd, psi, .psq, .logfile. --the –p T indicates this is a protein database ...
Building Applications using SQL Azure
... Maximum single database size is currently 10GB Database size calculation Includes: primary replica data, objects and indexes Does NOT include: logs, master database, system tables, server catalogs or additional replicas ...
... Maximum single database size is currently 10GB Database size calculation Includes: primary replica data, objects and indexes Does NOT include: logs, master database, system tables, server catalogs or additional replicas ...
SQL(Structured Query Language)
... Data Control Language (DCL) This category includes commands that protect the integrity of the database and the consistency of data by controlling and managing the acess to the database structures. These commands are often divided into transaction control commands session control commands, and syste ...
... Data Control Language (DCL) This category includes commands that protect the integrity of the database and the consistency of data by controlling and managing the acess to the database structures. These commands are often divided into transaction control commands session control commands, and syste ...
IST 210 Organization of Data
... Web server communicates with this program via CGI (Common gateway interface) Program generates result page with content from the database Problem: need to run multiple processes which is not efficient. ...
... Web server communicates with this program via CGI (Common gateway interface) Program generates result page with content from the database Problem: need to run multiple processes which is not efficient. ...
PPT - Courses - University of California, Berkeley
... • Note: we created authors from the former design when talking about normalization (a few weeks ago) ...
... • Note: we created authors from the former design when talking about normalization (a few weeks ago) ...
21SCS157BL6FDSQL
... By making an exception for certain dependencies involving key attributes, we can ensure that every relation schema can be decomposed into a collection of 3NF relations using only decompositions. Such a guarantee does not exist for BCNF relations. It weaken the BCNF requirements just enough to ...
... By making an exception for certain dependencies involving key attributes, we can ensure that every relation schema can be decomposed into a collection of 3NF relations using only decompositions. Such a guarantee does not exist for BCNF relations. It weaken the BCNF requirements just enough to ...