tr-2006-45
... structures (such as directories and filenames) from corruption due to dirty shutdowns (such as system crashes and power outages). However, there is no such guarantee for file contents. In particular, filesystems and the operating system below them reorder write requests to improve performance. Only ...
... structures (such as directories and filenames) from corruption due to dirty shutdowns (such as system crashes and power outages). However, there is no such guarantee for file contents. In particular, filesystems and the operating system below them reorder write requests to improve performance. Only ...
Week 11: XML Access Control
... Example of LOGON and LOGOFF Database Events • Steps: – Log on as SYSTEM – Create the APP_AUDIT_LOGINS table – Create two triggers: • One that fires after the logon event • One that fires before the logoff event ...
... Example of LOGON and LOGOFF Database Events • Steps: – Log on as SYSTEM – Create the APP_AUDIT_LOGINS table – Create two triggers: • One that fires after the logon event • One that fires before the logoff event ...
Search-Effectiveness Measures for Symbolic Music Queries in Very
... 3.4 bits/note is the lower symbol storage size limit needed to store sequences of 12-tone intervals (Folksong data set). • Entropy can be used as a basic estimate for how many notes are necessary to find a unique/sufficient match in the database, but ... ...
... 3.4 bits/note is the lower symbol storage size limit needed to store sequences of 12-tone intervals (Folksong data set). • Entropy can be used as a basic estimate for how many notes are necessary to find a unique/sufficient match in the database, but ... ...
Database Access in Mobile Environments
... The access to the Infoverse has to be transparent to the user. The user should not need to know the specific structure of the stored data and the physical location of these data. Additionally, a user should not need to know which kinds of information are used to realize his access. Localization of d ...
... The access to the Infoverse has to be transparent to the user. The user should not need to know the specific structure of the stored data and the physical location of these data. Additionally, a user should not need to know which kinds of information are used to realize his access. Localization of d ...
Sensor Data Storage Performance: SQL or NoSQL, Physical
... familiar with them and because of the stability of these databases. However, distributing SQL databases to a very large scale is difficult. Because these databases are built for the support of consistency and availability, there is less tolerance for network partitions, which makes it difficult to sca ...
... familiar with them and because of the stability of these databases. However, distributing SQL databases to a very large scale is difficult. Because these databases are built for the support of consistency and availability, there is less tolerance for network partitions, which makes it difficult to sca ...
12.2_InMemory_new_features
... The Expression Statistics Store (ESS) automatically tracks the results of frequently evaluated (“hot”) expressions Invoke the IME_CAPTURE_EXPRESSIONS procedure which is part of the DBMS_INMEMORY_ADMIN package Queries the ESS, and identifies the 20 most frequently accessed (“hottest”) expressio ...
... The Expression Statistics Store (ESS) automatically tracks the results of frequently evaluated (“hot”) expressions Invoke the IME_CAPTURE_EXPRESSIONS procedure which is part of the DBMS_INMEMORY_ADMIN package Queries the ESS, and identifies the 20 most frequently accessed (“hottest”) expressio ...
database-sql - CyberInfrastructure and Geospatial Information
... o insert into count values(1, ‘item0', 100); o insert into count values(2, ‘item1', 101); o insert into count values(3, ‘item2, 102); ...
... o insert into count values(1, ‘item0', 100); o insert into count values(2, ‘item1', 101); o insert into count values(3, ‘item2, 102); ...
Review of db4o from db4objects
... supported by using transactions and transaction isolation levels. By using transaction isolation levels, the DBMS can lock rows and block other transactions. To get the desired behavior, an application can choose between four isolation levels – Read Uncommitted, Read Commited, Repeatable Read and Se ...
... supported by using transactions and transaction isolation levels. By using transaction isolation levels, the DBMS can lock rows and block other transactions. To get the desired behavior, an application can choose between four isolation levels – Read Uncommitted, Read Commited, Repeatable Read and Se ...
Python: Strings - CS-People by full name
... >>> db.rollback() • to make permanent all changes made during a transaction: >>> db.commit() • committing or rolling back a transaction begins a new one • If an error occurs when executing a command, you need to rollback the current transaction before issuing other commands. ...
... >>> db.rollback() • to make permanent all changes made during a transaction: >>> db.commit() • committing or rolling back a transaction begins a new one • If an error occurs when executing a command, you need to rollback the current transaction before issuing other commands. ...
Using SAS with a SQL Server Database
... statement may also reveal data value problems. For instance, in inserting or updating SQL Server table data, data values that contain an apostrophe (like O’No) may cause the SQL insert or update command to fail. Before running PROC SQL, such apostrophes could be removed or changed to a blank space i ...
... statement may also reveal data value problems. For instance, in inserting or updating SQL Server table data, data values that contain an apostrophe (like O’No) may cause the SQL insert or update command to fail. Before running PROC SQL, such apostrophes could be removed or changed to a blank space i ...
Nested Queries
... Complex problem of efficiently implementing a view for querying Query modification approach ...
... Complex problem of efficiently implementing a view for querying Query modification approach ...
Fundamentals of Database Systems
... Accounts, and Database Audits The database system must also keep track of all operations on the database that are applied by a certain user throughout each login session. – To keep a record of all updates applied to the database and of the particular user who applied each update, we can modify syst ...
... Accounts, and Database Audits The database system must also keep track of all operations on the database that are applied by a certain user throughout each login session. – To keep a record of all updates applied to the database and of the particular user who applied each update, we can modify syst ...
oraclearch
... •All users connect ominously to a web site. The Web or Application server connects to Oracle in the context of a particular user. •Although the Web or Application server connects to Oracle in the context of a particular user, individuals connecting to the web site must still authenticate for the int ...
... •All users connect ominously to a web site. The Web or Application server connects to Oracle in the context of a particular user. •Although the Web or Application server connects to Oracle in the context of a particular user, individuals connecting to the web site must still authenticate for the int ...
A Quick Immersion Into Rose::DB
... Complex Query Example • Find the applications that were developed by someone born before 1950. • Cf. apps_by_oldtimers ...
... Complex Query Example • Find the applications that were developed by someone born before 1950. • Cf. apps_by_oldtimers ...
Incomplete Recovery
... • Perform complete or incomplete user-managed recovery • Identify situations where incomplete recovery is necessary • Perform complete or incomplete recovery by using RMAN • Perform incomplete recovery based on time, SCN, log sequence, restore points, or the cancel method • Recover an automatically ...
... • Perform complete or incomplete user-managed recovery • Identify situations where incomplete recovery is necessary • Perform complete or incomplete recovery by using RMAN • Perform incomplete recovery based on time, SCN, log sequence, restore points, or the cancel method • Recover an automatically ...
Lecture 1 - Salim Arfaoui
... symbols (a.k.a. notation) used for data modeling. There is no consensus among IS professionals on which set to use. • We’ll use the crow’s feet notation. It is commonly found in systems analysis and design textbooks. • Once you become comfortable with data modeling terms—what they are and, more impo ...
... symbols (a.k.a. notation) used for data modeling. There is no consensus among IS professionals on which set to use. • We’ll use the crow’s feet notation. It is commonly found in systems analysis and design textbooks. • Once you become comfortable with data modeling terms—what they are and, more impo ...
9780538469685_PPT_ch13 - MCST-CS
... – Uncover problems or opportunities hidden in data relationships – Form computer models based on their findings – Use models to predict business behavior ...
... – Uncover problems or opportunities hidden in data relationships – Form computer models based on their findings – Use models to predict business behavior ...
Odysseus: a High-Performance ORDBMS Tightly
... large databases when high performance is required. In this paper, we propose the tight-coupling architecture [11] to solve these problems. In the tight-coupling architecture, a new data type and its operations are implemented directly into the core of the DBMS engine. This architecture has the follo ...
... large databases when high performance is required. In this paper, we propose the tight-coupling architecture [11] to solve these problems. In the tight-coupling architecture, a new data type and its operations are implemented directly into the core of the DBMS engine. This architecture has the follo ...
Incomplete Recovery
... • Perform complete or incomplete user-managed recovery • Identify situations where incomplete recovery is necessary • Perform complete or incomplete recovery by using RMAN • Perform incomplete recovery based on time, SCN, log sequence, restore points, or the cancel method • Recover an automatically ...
... • Perform complete or incomplete user-managed recovery • Identify situations where incomplete recovery is necessary • Perform complete or incomplete recovery by using RMAN • Perform incomplete recovery based on time, SCN, log sequence, restore points, or the cancel method • Recover an automatically ...
OPTIMIZING DBA EFFICIENCY:
... often involving downtime during the process, or length periods of placing the database in hot backup mode which can impact performance. For many customers particularly those with larger databases, this creates a challenge with meeting backup and restore windows. This can also impact long term storag ...
... often involving downtime during the process, or length periods of placing the database in hot backup mode which can impact performance. For many customers particularly those with larger databases, this creates a challenge with meeting backup and restore windows. This can also impact long term storag ...
Chapter 10 - Databases
... • Publishers.PubID is a primary key. • We say that Titles.PubID is a foreign key of Publishers. PubID Chapter 10 - VB.Net by Schneider ...
... • Publishers.PubID is a primary key. • We say that Titles.PubID is a foreign key of Publishers. PubID Chapter 10 - VB.Net by Schneider ...
Microsoft Jet Database Engine
The Microsoft Jet Database Engine is a database engine on which several Microsoft products have been built. A database engine is the underlying component of a database, a collection of information stored on a computer in a systematic way. The first version of Jet was developed in 1992, consisting of three modules which could be used to manipulate a database.Database connect for MicrosoftJET stands for Joint Engine Technology, sometimes being referred to as Microsoft JET Engine or simply Jet. Microsoft Access and Visual Basic use or have used Jet as their underlying database engine. It has since been superseded for general use, however, first by Microsoft Desktop Engine (MSDE), then later by SQL Server Express. For larger database needs, Jet databases can be upgraded (or, in Microsoft parlance, ""up-sized"") to Microsoft's flagship database product, SQL Server.However, this does not mean that a MS Jet (Red) database cannot match MS SQL Server in storage capacity. A 5 billion record MS Jet (Red) database with compression and encryption turned on requires about 1 terabyte of disk storage space, comprising hundreds of (*.mdb) files, each acting as partial table, and not as a database in itself.Over the years, Jet has become almost synonymous with Microsoft Access, to the extent that many people refer to a Jet database as an ""Access database"".