Low-Overhead Asynchronous Checkpointing in Main
... called stable status. Each record corresponds to a bit in stable status to indicate whether its stable version is empty1 . For the purposes of this discussion, we assume that transactions are executed using a pessimistic (lock-based) concurrency control algorithm in a multi-threaded execution enviro ...
... called stable status. Each record corresponds to a bit in stable status to indicate whether its stable version is empty1 . For the purposes of this discussion, we assume that transactions are executed using a pessimistic (lock-based) concurrency control algorithm in a multi-threaded execution enviro ...
driver
... ODBC is (Open Database Connectivity): A standard or open application programming interface (API) for accessing a database. SQL Access Group, chiefly Microsoft, in 1992 By using ODBC statements in a program, you can access files in a number of different databases, including Access, dBase, DB2, ...
... ODBC is (Open Database Connectivity): A standard or open application programming interface (API) for accessing a database. SQL Access Group, chiefly Microsoft, in 1992 By using ODBC statements in a program, you can access files in a number of different databases, including Access, dBase, DB2, ...
Parsing a SAS Database for Correctness: A Conceptual Introduction
... daunting if an institution maintains many large and complex databases. This is the case in the pharmaceutical industry, where each study has its own database schema consisting of 20-50 unique SAS datasets. One can view the inter-record relationships as a tree structure having a well-defined geometry ...
... daunting if an institution maintains many large and complex databases. This is the case in the pharmaceutical industry, where each study has its own database schema consisting of 20-50 unique SAS datasets. One can view the inter-record relationships as a tree structure having a well-defined geometry ...
3_concurrency
... this page. Process2 sets the Shared lock on the page, because Shared locks are compatible with other Shared locks. Process3 wants to modify data and wants to set Exclusive lock, but it cannot make it before Process1 and Process2 will be finished, because Exclusive lock is not compatible with other l ...
... this page. Process2 sets the Shared lock on the page, because Shared locks are compatible with other Shared locks. Process3 wants to modify data and wants to set Exclusive lock, but it cannot make it before Process1 and Process2 will be finished, because Exclusive lock is not compatible with other l ...
Java Database Connectivity JDBC Architecture JDBC - CS
... • The same data can be organized in very different ways – When designing your DB and when deciding what your primary keys should be, always think about typical use cases and deduce from them which queries are most common and which queries must run fastest ...
... • The same data can be organized in very different ways – When designing your DB and when deciding what your primary keys should be, always think about typical use cases and deduce from them which queries are most common and which queries must run fastest ...
CS 46B: Introduction to Data Structures
... Databases Illuminated, 3rd ed. by Ricardo & Urban Jones & Bartlett Learning, 2017 ISBN 978-1-284-05694-5 ...
... Databases Illuminated, 3rd ed. by Ricardo & Urban Jones & Bartlett Learning, 2017 ISBN 978-1-284-05694-5 ...
Zephyr: Live Migration in Shared Nothing Databases for Elastic
... metadata to the destination which can then start serving new transactions, while the source completes the transactions that were active when migration started. Read/write access (called ownership) on database pages of the tenant is partitioned between the two nodes with the source node owning all pa ...
... metadata to the destination which can then start serving new transactions, while the source completes the transactions that were active when migration started. Read/write access (called ownership) on database pages of the tenant is partitioned between the two nodes with the source node owning all pa ...
SQLite Library
... Encrypted Databases (Cont.) • 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 cl ...
... Encrypted Databases (Cont.) • 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 cl ...
JDBC - Free
... Metadata: Information about the returned data, driver and the database. ResultSet : logical set of columns and rows returned by executing a statement. ...
... Metadata: Information about the returned data, driver and the database. ResultSet : logical set of columns and rows returned by executing a statement. ...
Distributed Databases - University of Texas at El Paso
... • 2 mirror-image databases maintained • All transactions stored/updated in both databases • Upon failure, the database is ‘switched’ for the mirror image • Generally stored across distributed databases • Fastest/most secure ...
... • 2 mirror-image databases maintained • All transactions stored/updated in both databases • Upon failure, the database is ‘switched’ for the mirror image • Generally stored across distributed databases • Fastest/most secure ...
Database Configuration and Maintenance
... Configuring Files and Filegroups SQL Server uses two different types of files— data and transaction log files. Filegroups are a logical structure, defined within a database, that map a database and the objects contained within a database, to the data files on disk. Filegroups can contain more than o ...
... Configuring Files and Filegroups SQL Server uses two different types of files— data and transaction log files. Filegroups are a logical structure, defined within a database, that map a database and the objects contained within a database, to the data files on disk. Filegroups can contain more than o ...
TMs and ORBs - Microsoft Research
... that explicitly refer to earlier service requests; for example, “Give me the next 10 records.” The requirement for such service requests arises with SQL cursors. First, there is the OPEN CURSOR call, which causes the SELECT statement to be executed and all the context information in the database sys ...
... that explicitly refer to earlier service requests; for example, “Give me the next 10 records.” The requirement for such service requests arises with SQL cursors. First, there is the OPEN CURSOR call, which causes the SELECT statement to be executed and all the context information in the database sys ...
Chapter 9 - Personal.kent.edu
... Two-Phased Resource Locking • Two-phased locking, whereby locks are obtained as they are needed – A growing phase, whereby the transaction continues to request additional locks – A shrinking phase, whereby the transaction begins to release the locks ...
... Two-Phased Resource Locking • Two-phased locking, whereby locks are obtained as they are needed – A growing phase, whereby the transaction continues to request additional locks – A shrinking phase, whereby the transaction begins to release the locks ...
Read the note on How to Configure a Downstream
... On the Downstream Capture database, we will create standby redo log file groups. The size of the standby redo log file groups should be same as the online redo log file and the number of standby redo log file groups needs to be one more in number than the number of online redo log file groups. ...
... On the Downstream Capture database, we will create standby redo log file groups. The size of the standby redo log file groups should be same as the online redo log file and the number of standby redo log file groups needs to be one more in number than the number of online redo log file groups. ...
HUAWEI OceanStor S5500T Exchange Server 2010 Solution with
... This solution is intended for medium-to-large enterprise that is planning to deploy Microsoft Exchange Server 2010 on HUAWEI storage and would like to leverage the Exchange Server 2010 mailbox resiliency Database Availability Group (DAG) feature. The solution design represents an Exchange Server 201 ...
... This solution is intended for medium-to-large enterprise that is planning to deploy Microsoft Exchange Server 2010 on HUAWEI storage and would like to leverage the Exchange Server 2010 mailbox resiliency Database Availability Group (DAG) feature. The solution design represents an Exchange Server 201 ...
ppt - Avi Silberschatz
... no physical component Database systems that run on each site are independent of each other Transactions may access data at one or more sites ...
... no physical component Database systems that run on each site are independent of each other Transactions may access data at one or more sites ...
Distributed Databases
... It is important to distinguish between distributed and decentralized databases. A decentralized database is also stored on computers at multiple locations; however, the computers are not interconnected by network and database software that make the data appear to be in one logical database. Thus, us ...
... It is important to distinguish between distributed and decentralized databases. A decentralized database is also stored on computers at multiple locations; however, the computers are not interconnected by network and database software that make the data appear to be in one logical database. Thus, us ...
inconsistent databases
... which semantic constraints have to be imposed; or more generally, a database on which imposing new constrains depending on specific needs, e.g. user constraints, becomes necessary. In the area of data integration the satisfaction of desirable ICs by a database is much more difficult to achieve. One ...
... which semantic constraints have to be imposed; or more generally, a database on which imposing new constrains depending on specific needs, e.g. user constraints, becomes necessary. In the area of data integration the satisfaction of desirable ICs by a database is much more difficult to achieve. One ...
Berkeley DB Proceedings of the FREENIX Track: 1999 USENIX Annual Technical Conference
... and splits pages unevenly to keep pages fuller. This reduces tree size, yielding better search performance and smaller databases. ...
... and splits pages unevenly to keep pages fuller. This reduces tree size, yielding better search performance and smaller databases. ...
Introduction to Database System
... Database administrator's duties include : – Define the schema – Define storage structure and access method – Modify schema and physical organization – Granting user authority to access the database – Specifying integrity constraints – Acting as liaison with users – Monitoring performance and respond ...
... Database administrator's duties include : – Define the schema – Define storage structure and access method – Modify schema and physical organization – Granting user authority to access the database – Specifying integrity constraints – Acting as liaison with users – Monitoring performance and respond ...
Manually Creating the Log Database
... A threats partition database (by default, wslogdb70_amt_1) holds information about advanced malware threats used to populate the Threats dashboard. ...
... A threats partition database (by default, wslogdb70_amt_1) holds information about advanced malware threats used to populate the Threats dashboard. ...
Chapter 21:Application Development and Administration
... • E.g., store join of account and depositor; branch-name and balance information is repeated for each holder of an account, but join need not be computed repeatedly. • Price paid: more space and more work for programmer to keep relation consistent on updates • better to use materialized views (more ...
... • E.g., store join of account and depositor; branch-name and balance information is repeated for each holder of an account, but join need not be computed repeatedly. • Price paid: more space and more work for programmer to keep relation consistent on updates • better to use materialized views (more ...