System Administration Basics
... Backup database and bea813/bea920 directory before. BB still learning also. Expect an install to fail to play it safe. Build in downtime to restore database each time. Oracle security patches fairly safe. Oracle minor upgrades (ie. 9206 to 9207) take more planning. Oracle 9i to 10g takes the most pl ...
... Backup database and bea813/bea920 directory before. BB still learning also. Expect an install to fail to play it safe. Build in downtime to restore database each time. Oracle security patches fairly safe. Oracle minor upgrades (ie. 9206 to 9207) take more planning. Oracle 9i to 10g takes the most pl ...
第11 章
... – Crucial in speeding up data access – Facilitate searching, sorting, and using aggregate functions as well as join operations – Ordered set of values that contains index key and pointers ...
... – Crucial in speeding up data access – Facilitate searching, sorting, and using aggregate functions as well as join operations – Ordered set of values that contains index key and pointers ...
Ch01_part2
... File System Databases: Modern EndUser Productivity Tools • Microsoft Excel – Widely used by business users – Users have become so adept at working with spreadsheets, they tend to use them to complete tasks for which spreadsheets are not appropriate – database substitute ...
... File System Databases: Modern EndUser Productivity Tools • Microsoft Excel – Widely used by business users – Users have become so adept at working with spreadsheets, they tend to use them to complete tasks for which spreadsheets are not appropriate – database substitute ...
DATA INDEPENDENCE AND DATABASE VIEWS
... If the base tables do not change, neither does the view instance • Re-executing view definition each time the view is used is wasteful if base data has not been updated Solution: view materialization • Create a temporary view table when the view is first queried • Keep view table on the assumpti ...
... If the base tables do not change, neither does the view instance • Re-executing view definition each time the view is used is wasteful if base data has not been updated Solution: view materialization • Create a temporary view table when the view is first queried • Keep view table on the assumpti ...
What Is a Transaction?
... there is some scheduling order in which every processes can run to completion even if all of them suddenly request their maximum number of resources immediately. ...
... there is some scheduling order in which every processes can run to completion even if all of them suddenly request their maximum number of resources immediately. ...
Oracle Database Administrator with more than 3
... Providing 24/7 support for both the applications and databases. Ensuring the databases and applications are available for the production, development and testing teams. Creation of database schemas, tablespaces and granting privileges to the schemas as per the requirement. Monitoring and maintaining ...
... Providing 24/7 support for both the applications and databases. Ensuring the databases and applications are available for the production, development and testing teams. Creation of database schemas, tablespaces and granting privileges to the schemas as per the requirement. Monitoring and maintaining ...
data warehousing olap project description
... activities (example data mining, data warehousing, reporting etc). Some of the main features of this tool are as follows: Server Management Studio: This is a graphical tool used for all the data management activities and it also helps us to build a query in a very user friendly development environme ...
... activities (example data mining, data warehousing, reporting etc). Some of the main features of this tool are as follows: Server Management Studio: This is a graphical tool used for all the data management activities and it also helps us to build a query in a very user friendly development environme ...
ppt - users.cs.umn.edu
... NSM data layout is completely inefficient A radical change in the query workload as many ...
... NSM data layout is completely inefficient A radical change in the query workload as many ...
DOC - Description
... Since data is stored in a form most appropriate for practical use, data can be retrieved for unexpected or nonstandard requests. Thus, one achieves greater expandability and cost reduction ...
... Since data is stored in a form most appropriate for practical use, data can be retrieved for unexpected or nonstandard requests. Thus, one achieves greater expandability and cost reduction ...
DM – SS solutions
... relationships in a tree-like structure that allows multiple parents. It was the most popular before being replaced by the relational model, and is defined by the CODASYL specification. The network model organizes data using two fundamental concepts, called records and sets. Records contain fields (w ...
... relationships in a tree-like structure that allows multiple parents. It was the most popular before being replaced by the relational model, and is defined by the CODASYL specification. The network model organizes data using two fundamental concepts, called records and sets. Records contain fields (w ...
Corporate PPT Template
... standalone,TAF, connection pool, and session pool connections are automatically broken and cleaned up by OCI and the application callback is invoked within seconds of the failure event. ...
... standalone,TAF, connection pool, and session pool connections are automatically broken and cleaned up by OCI and the application callback is invoked within seconds of the failure event. ...
Introduction - CIS @ Temple University
... What is the content of a media source? Under what conditions can content be described textually and under what conditions must it be described directly through the original media type? How should we extract the content of: an image, videoclip, audio-clip, free/structured document? How to index the r ...
... What is the content of a media source? Under what conditions can content be described textually and under what conditions must it be described directly through the original media type? How should we extract the content of: an image, videoclip, audio-clip, free/structured document? How to index the r ...
FOREIGN KEY
... TINYTEXT A string with a maximum length of 255 characters. TINYBLOB A string with a maximum length of 255 characters. TEXT A string with a maximum length of 65535 characters. BLOB A string with a maximum length of 65535 characters. MEDIUMTEXT A string with a maximum length of 16777215 char ...
... TINYTEXT A string with a maximum length of 255 characters. TINYBLOB A string with a maximum length of 255 characters. TEXT A string with a maximum length of 65535 characters. BLOB A string with a maximum length of 65535 characters. MEDIUMTEXT A string with a maximum length of 16777215 char ...
Technical Overview of Oracle Exadata
... need to access this portion of the table as the B value of interest could potentially exist here. However, if the next 1M storage region had a MIN=2 and MAX=8 , then the B value of less than 2 will not scan that portion of table and can be ignored and not accessed at all during the Smart Scan. The S ...
... need to access this portion of the table as the B value of interest could potentially exist here. However, if the next 1M storage region had a MIN=2 and MAX=8 , then the B value of less than 2 will not scan that portion of table and can be ignored and not accessed at all during the Smart Scan. The S ...
Student Projects Chapter 08
... Step 8.1: Modify the ER diagram and draw an EER diagram to represent the enterprise. Be sure to identify relationship participation and cardinality constraints using (min,max) notation. Identify any weak entity sets. Use generalization and union as necessary to express class relationships, adding ap ...
... Step 8.1: Modify the ER diagram and draw an EER diagram to represent the enterprise. Be sure to identify relationship participation and cardinality constraints using (min,max) notation. Identify any weak entity sets. Use generalization and union as necessary to express class relationships, adding ap ...
Lecture Notes
... • Each table captures information about a different entity. – Columns are different fields of information (attributes of the entity). – Each row represents one instance (a specific example of the entity). ...
... • Each table captures information about a different entity. – Columns are different fields of information (attributes of the entity). – Each row represents one instance (a specific example of the entity). ...
Return - Department of Computer Science
... Divide the query sequence W into overlapping sub string , F = {wi | i =0..| W |-q }, of length q with step size 1. For each wi in F, run range query Q(wi, r) against database D to find a set of matching q-grams, Ri = f i,j | d( f i,j , wi) <= r, f i,j E D wi E F }, where d is the distance function. ...
... Divide the query sequence W into overlapping sub string , F = {wi | i =0..| W |-q }, of length q with step size 1. For each wi in F, run range query Q(wi, r) against database D to find a set of matching q-grams, Ri = f i,j | d( f i,j , wi) <= r, f i,j E D wi E F }, where d is the distance function. ...
Using the SAS System for Remote Data Access and Distributed Computing
... into considerations of 'rightsizing' . In a 'rightsizing' frame of mind, application developers begin to consider the three segments of the ·application for movement. The flISt candidate is the presentation layer. This is almost a given, since part of the reason to consider this move is to take adva ...
... into considerations of 'rightsizing' . In a 'rightsizing' frame of mind, application developers begin to consider the three segments of the ·application for movement. The flISt candidate is the presentation layer. This is almost a given, since part of the reason to consider this move is to take adva ...
- MarkLogic
... Any time a new document is added or an old document is updated, we can find all possible matching queries in the index ...
... Any time a new document is added or an old document is updated, we can find all possible matching queries in the index ...
Slide 1
... 2. The DAO would obtain an entity manager and use its functionality to fetch one or more objects from the database 3. Your application can then use the fetched object(s) as it wishes 4. If it changes it, no need to store it again (unless it becomes detached) ...
... 2. The DAO would obtain an entity manager and use its functionality to fetch one or more objects from the database 3. Your application can then use the fetched object(s) as it wishes 4. If it changes it, no need to store it again (unless it becomes detached) ...