ORACLE: PL/SQL
... • The primary function of the redo log is to record all changes made to data. If a failure prevents modified data from being permanently written to the datafiles, then the changes can be obtained from the redo log, so work is never lost. • To protect against a failure involving the redo log itself, ...
... • The primary function of the redo log is to record all changes made to data. If a failure prevents modified data from being permanently written to the datafiles, then the changes can be obtained from the redo log, so work is never lost. • To protect against a failure involving the redo log itself, ...
02010_PPT_ch10
... that modify database • Concurrency control coordinates simultaneous execution of transactions • Scheduler establishes order in which concurrent transaction operations are executed • Lock guarantees unique access to a data item by transaction • Two types of locks: binary locks and shared/exclusive lo ...
... that modify database • Concurrency control coordinates simultaneous execution of transactions • Scheduler establishes order in which concurrent transaction operations are executed • Lock guarantees unique access to a data item by transaction • Two types of locks: binary locks and shared/exclusive lo ...
Introduction to database design
... Materialized views are computed and stored physically for faster access. When the base tables are updated the view changes and must be recomputed: - May be inefficient when many updates - Main issue – when and how to update the stored view ...
... Materialized views are computed and stored physically for faster access. When the base tables are updated the view changes and must be recomputed: - May be inefficient when many updates - Main issue – when and how to update the stored view ...
CA Gen Client Server Encyclopedia
... Thi s Documentation, which i ncludes embedded help systems a nd electronically distributed materials, (hereinafter referred to a s the “Documentation”) is for your i nformational purposes only a nd i s subject to change or wi thdrawal by CA a t a ny ti me. Thi s Documentation ma y not be copied, tr ...
... Thi s Documentation, which i ncludes embedded help systems a nd electronically distributed materials, (hereinafter referred to a s the “Documentation”) is for your i nformational purposes only a nd i s subject to change or wi thdrawal by CA a t a ny ti me. Thi s Documentation ma y not be copied, tr ...
PPT
... Order of tuples is irrelevant (tuples may be stored in an arbitrary order) Relations are basically set! Example: the instructor relation with unordered tuples ...
... Order of tuples is irrelevant (tuples may be stored in an arbitrary order) Relations are basically set! Example: the instructor relation with unordered tuples ...
Chapter 1
... • The purpose of a database is to help people track things of interest to them. • Data is stored in tables, which have rows and columns like a spreadsheet. A database may have multiple tables, where each table stores data about a different thing. • Each row in a table stores data about an occurrence ...
... • The purpose of a database is to help people track things of interest to them. • Data is stored in tables, which have rows and columns like a spreadsheet. A database may have multiple tables, where each table stores data about a different thing. • Each row in a table stores data about an occurrence ...
Data-tier Applications in SQL Server 2008 R2
... objects, a server selection policy, and custom scripts (sometimes referred to as additional or extra files). In order to get started and define the schema of an application, developers can import a DAC package into the project system, or they can select an instance of SQL Server and import objects f ...
... objects, a server selection policy, and custom scripts (sometimes referred to as additional or extra files). In order to get started and define the schema of an application, developers can import a DAC package into the project system, or they can select an instance of SQL Server and import objects f ...
Microsoft Office Access 2013
... • All database objects are stored within a single database file with the .accdb file name extension – Access 2007 also uses the .accdb extension – Earlier versions of Access use the .mdb extension ...
... • All database objects are stored within a single database file with the .accdb file name extension – Access 2007 also uses the .accdb extension – Earlier versions of Access use the .mdb extension ...
High-Performance Extensible Indexing
... and recovery protocols, are implemented in the GiST core. It is part of the database server and interacts with the AM extension via the redesigned GiST interface, which consists of 11 functions that each AM extension needs to implement. Compared to the original GiST interface, which encapsulates dat ...
... and recovery protocols, are implemented in the GiST core. It is part of the database server and interacts with the AM extension via the redesigned GiST interface, which consists of 11 functions that each AM extension needs to implement. Compared to the original GiST interface, which encapsulates dat ...
Lesson 1 Summary Slides
... • All database objects are stored within a single database file with the .accdb file name extension – Access 2007 also uses the .accdb extension – Earlier versions of Access use the .mdb extension ...
... • All database objects are stored within a single database file with the .accdb file name extension – Access 2007 also uses the .accdb extension – Earlier versions of Access use the .mdb extension ...
Introduction to Eclipse, Unit Testing and JUnit - CS
... discouraged – think of the architecture involved: ADO.NET – COM interop – (optional) OLE DB services – OLE DB provider – ODBC driver – data source! ...
... discouraged – think of the architecture involved: ADO.NET – COM interop – (optional) OLE DB services – OLE DB provider – ODBC driver – data source! ...
PARALLEL EXECUTION FACILITY CONFIGURATION AND USE
... illustrated in Figure 3 where two PX slaves are utilized for each execution thread. This configuration occurs when executing either a merge or hash join, or when sorting or other aggregation operations are present in the original query. It will also occur when a parallel DML statement is executed wi ...
... illustrated in Figure 3 where two PX slaves are utilized for each execution thread. This configuration occurs when executing either a merge or hash join, or when sorting or other aggregation operations are present in the original query. It will also occur when a parallel DML statement is executed wi ...
extended version - Department of Computer Science, University of
... in the context of the MystiQ [5] and SPROUT [11] probabilistic database systems show performance for tractable queries over probabilistic databases close to that for queries over classical deterministic databases. The second avenue is to develop techniques that approximate the probabilities of the ...
... in the context of the MystiQ [5] and SPROUT [11] probabilistic database systems show performance for tractable queries over probabilistic databases close to that for queries over classical deterministic databases. The second avenue is to develop techniques that approximate the probabilities of the ...
DBA Guide to Databases: VMware, Inc.
... possible. Traditional databases running on fixed physical hardware are often over-sized, underutilized, protected by complex, expensive clustering solutions, and require rigorous processes for version control and continued application compatibility. VMware virtualization creates a layer of abstracti ...
... possible. Traditional databases running on fixed physical hardware are often over-sized, underutilized, protected by complex, expensive clustering solutions, and require rigorous processes for version control and continued application compatibility. VMware virtualization creates a layer of abstracti ...
Introduction to Structured Query Language
... Hold a variable length string. The maximum size of fixed length string is specified by size. Unused space is not packed with any characters. Date format may be different in various databases but they all contain calendar date with year, month and day. ...
... Hold a variable length string. The maximum size of fixed length string is specified by size. Unused space is not packed with any characters. Date format may be different in various databases but they all contain calendar date with year, month and day. ...
Lecture 10 - cda college
... Transaction Management with SQL • ANSI has defined standards that govern SQL database transactions • Transaction support is provided by two SQL statements: COMMIT and ROLLBACK • Transaction sequence must continue until: ...
... Transaction Management with SQL • ANSI has defined standards that govern SQL database transactions • Transaction support is provided by two SQL statements: COMMIT and ROLLBACK • Transaction sequence must continue until: ...
SQLite Library
... • When a database is encrypted, it is linked to the device in which it is created. So, it does not support portability between databases. • In order to transfer the encrypted database to the other device, you have to decrypt it first. • An encrypted database should be closed as soon as possible, oth ...
... • When a database is encrypted, it is linked to the device in which it is created. So, it does not support portability between databases. • In order to transfer the encrypted database to the other device, you have to decrypt it first. • An encrypted database should be closed as soon as possible, oth ...
Roll - Victoria University of Wellington
... SWEN 432 Advanced Database Design and Implementation 2017 ...
... SWEN 432 Advanced Database Design and Implementation 2017 ...
IOSR Journal of Computer Engineering (IOSR-JCE) e-ISSN: 2278-0661,p-ISSN: 2278-8727 PP 15-18 www.iosrjournals.org
... maintained. To maintain Concurrency in distributed database different locking techniques should used which is based on mutual exclusion of access to data. Time stamping algorithm also used where transactions are executed in some order [1]. 2) Distributed Deadlock Management :- In distributed databas ...
... maintained. To maintain Concurrency in distributed database different locking techniques should used which is based on mutual exclusion of access to data. Time stamping algorithm also used where transactions are executed in some order [1]. 2) Distributed Deadlock Management :- In distributed databas ...
Database Security and Auditing
... – Select any user other than SYSTEM or SYS; with privileges to create tables, and procedures – Populate tables – Create the ERROR table – Create a stored package to perform the UPDATE statement – Test your implementation: perform and update using the CREATE package Database Security and Auditing ...
... – Select any user other than SYSTEM or SYS; with privileges to create tables, and procedures – Populate tables – Create the ERROR table – Create a stored package to perform the UPDATE statement – Test your implementation: perform and update using the CREATE package Database Security and Auditing ...
Database Security and Auditing
... – Select any user other than SYSTEM or SYS; with privileges to create tables, and procedures – Populate tables – Create the ERROR table – Create a stored package to perform the UPDATE statement – Test your implementation: perform and update using the CREATE package Database Security and Auditing ...
... – Select any user other than SYSTEM or SYS; with privileges to create tables, and procedures – Populate tables – Create the ERROR table – Create a stored package to perform the UPDATE statement – Test your implementation: perform and update using the CREATE package Database Security and Auditing ...