ch15
... transactions send lock and unlock requests The lock manager replies to a lock request by sending a lock grant messages (or a message asking the transaction to roll back, in case of a deadlock) The requesting transaction waits until its request is answered The lock manager maintains a data-structure ...
... transactions send lock and unlock requests The lock manager replies to a lock request by sending a lock grant messages (or a message asking the transaction to roll back, in case of a deadlock) The requesting transaction waits until its request is answered The lock manager maintains a data-structure ...
KorthDB6_ch15
... Unlock requests result in the request being deleted, and later requests are checked to see if they can now be granted ...
... Unlock requests result in the request being deleted, and later requests are checked to see if they can now be granted ...
Designing, implementing and evaluating a database for a software
... The objective of this study is to design and implement a database for a software testing team. The previously mentioned design science approach by Hevner et al. (2004) is applied in this study. The database is the design artifact. There are seven guidelines for a successful design science research b ...
... The objective of this study is to design and implement a database for a software testing team. The previously mentioned design science approach by Hevner et al. (2004) is applied in this study. The database is the design artifact. There are seven guidelines for a successful design science research b ...
The Design, Implementation, and Performance of the V2 Temporal
... are 50% for small documents less than 1 KB, improving to approx. 20% for larger documents of 3 KB and more). Compression of raw XML will give even better compression due to the redundancy of tag names. However, XML documents are typically stored in a more optimized form in a database, using integer ...
... are 50% for small documents less than 1 KB, improving to approx. 20% for larger documents of 3 KB and more). Compression of raw XML will give even better compression due to the redundancy of tag names. However, XML documents are typically stored in a more optimized form in a database, using integer ...
Database Security
... Savepoints are similarly useful in application programs. If a procedure contains several functions, then you can create a savepoint before each function begins. Then, if a function fails, it is easy to return the data to its state before the function began and re-run the function with revised parame ...
... Savepoints are similarly useful in application programs. If a procedure contains several functions, then you can create a savepoint before each function begins. Then, if a function fails, it is easy to return the data to its state before the function began and re-run the function with revised parame ...
- Sacramento - California State University
... as DBAs have to set polices and manually perform the audit. Therefore, suspicious activities may not be discovered until much later time. Audit data are stored in the extensive built-in system logs, and they can only be queried through the predefined log views. In a similar way to encrypted data, w ...
... as DBAs have to set polices and manually perform the audit. Therefore, suspicious activities may not be discovered until much later time. Audit data are stored in the extensive built-in system logs, and they can only be queried through the predefined log views. In a similar way to encrypted data, w ...
Providing High Availability in Very Large Work ow Management
... then select the activity for execution from the worklist using a worklist-handler. On the other hand, if the activity is to be performed automatically, then the work ow engine selects it for execution. If an application program is to be invoked to execute the selected activity, the work ow engine no ...
... then select the activity for execution from the worklist using a worklist-handler. On the other hand, if the activity is to be performed automatically, then the work ow engine selects it for execution. If an application program is to be invoked to execute the selected activity, the work ow engine no ...
No Slide Title
... Specification of functional requirements (operations & transactions) Converting the abstract model to implementation details Logical design phase: convert ER to Tables Physical design phase: file organization, storage stucture Design alternatives for avoiding two major pitfalls ...
... Specification of functional requirements (operations & transactions) Converting the abstract model to implementation details Logical design phase: convert ER to Tables Physical design phase: file organization, storage stucture Design alternatives for avoiding two major pitfalls ...
PPT
... when txns conflict due to modifying different data, there is usually also a shared item they both modify too (like a total quantity) so SI will abort one of them ...
... when txns conflict due to modifying different data, there is usually also a shared item they both modify too (like a total quantity) so SI will abort one of them ...
Oracle Database In-Memory
... columns while the database remains fully active and accessible. Oracle Enterprise Manager makes it easy to monitor and measure the benefits of in-memory columns. ...
... columns while the database remains fully active and accessible. Oracle Enterprise Manager makes it easy to monitor and measure the benefits of in-memory columns. ...
Chapter 22: Relational Databases
... Notice in Figure 4 that there is now a Customer_Number column in both the Customer table and the Invoice table. Now all invoices for Sam’s Small Appliances share only the customer number. The two tables are linked by the Customer_Number field. To find out more details about this customer, you need t ...
... Notice in Figure 4 that there is now a Customer_Number column in both the Customer table and the Invoice table. Now all invoices for Sam’s Small Appliances share only the customer number. The two tables are linked by the Customer_Number field. To find out more details about this customer, you need t ...
T - KSU Web Home
... A node Q can be locked by Ti in S or IS mode only if the parent of Q is currently locked by Ti in either IX or IS mode. A node Q can be locked by Ti in X, SIX, or IX mode only if the parent of Q is currently locked by Ti in either IX or SIX mode. Ti can lock a node only if it has not previously unlo ...
... A node Q can be locked by Ti in S or IS mode only if the parent of Q is currently locked by Ti in either IX or IS mode. A node Q can be locked by Ti in X, SIX, or IX mode only if the parent of Q is currently locked by Ti in either IX or SIX mode. Ti can lock a node only if it has not previously unlo ...
Ch.8 - Faculty Website Listing
... Constraints, including FDs, are costly to check in practice unless they pertain to only one relation. If it is sufficient to test only those dependencies on each individual relation of a decomposition in order to ensure that all functional dependencies hold, then that decomposition is dependency pre ...
... Constraints, including FDs, are costly to check in practice unless they pertain to only one relation. If it is sufficient to test only those dependencies on each individual relation of a decomposition in order to ensure that all functional dependencies hold, then that decomposition is dependency pre ...
KorthDB6_ch3
... smallint. Small integer (a machine-dependent subset of the integer domain type). numeric(p,d). Fixed point number, with user-specified precision of p digits, with n digits to the right of decimal point. real, double precision. Floating point and double-precision floating point numbers, with machine- ...
... smallint. Small integer (a machine-dependent subset of the integer domain type). numeric(p,d). Fixed point number, with user-specified precision of p digits, with n digits to the right of decimal point. real, double precision. Floating point and double-precision floating point numbers, with machine- ...
Chapter 2: Relational Model
... 2. The attribute domains must be compatible (example: 2nd column of r deals with the same type of values as does the 2nd column of s) ■ Example: to find all customers with either an account or a loan ...
... 2. The attribute domains must be compatible (example: 2nd column of r deals with the same type of values as does the 2nd column of s) ■ Example: to find all customers with either an account or a loan ...
Oracle Database 12c Global Data Services (Oracle White Paper)
... Each Service represents a workload with common attributes, Service-level thresholds, and priorities. The grouping can be based on attributes of work that might include the application function to be used. For example, the Oracle E-Business suite defines a Service for each application module, such as ...
... Each Service represents a workload with common attributes, Service-level thresholds, and priorities. The grouping can be based on attributes of work that might include the application function to be used. For example, the Oracle E-Business suite defines a Service for each application module, such as ...
QARun Installation and Configuration Guide
... Compuware Central: An HTML-based component that provides a Web framework for managing and performing testing efforts from the beginning to the end of a project. Compuware Central supports a complete, seamless testing process from requirements management to test execution to results analysis and defe ...
... Compuware Central: An HTML-based component that provides a Web framework for managing and performing testing efforts from the beginning to the end of a project. Compuware Central supports a complete, seamless testing process from requirements management to test execution to results analysis and defe ...
lesson16
... • When a transaction log becomes 100 percent full, users lose access to the database until an administrator clears the transaction log. • Perform regular log backups to assure continuous database availability. ...
... • When a transaction log becomes 100 percent full, users lose access to the database until an administrator clears the transaction log. • Perform regular log backups to assure continuous database availability. ...
Chapter 3
... Many sites use Oracle to support mission critical applications. A mission-critical application, by definition, has stringent high-availability requirements. Such sites can tolerate little or no downtime due to a server crash. In such circumstances, Oracle's Parallel Server option can help. In a para ...
... Many sites use Oracle to support mission critical applications. A mission-critical application, by definition, has stringent high-availability requirements. Such sites can tolerate little or no downtime due to a server crash. In such circumstances, Oracle's Parallel Server option can help. In a para ...
1 - Fordham University
... Fig. 25.12 | Sampling of titles with copyrights after 2005 from table titles. ...
... Fig. 25.12 | Sampling of titles with copyrights after 2005 from table titles. ...
ppt - CSE, IIT Bombay
... Suppose that students are given roll numbers which are strings of the form CS0012 or EE1127 ...
... Suppose that students are given roll numbers which are strings of the form CS0012 or EE1127 ...
15. Concurrency Control
... Unlock requests result in the request being deleted, and later requests are checked to see if they can now be granted ...
... Unlock requests result in the request being deleted, and later requests are checked to see if they can now be granted ...
Ch3_RM - Fordham University Computer and Information
... Option 1: Delete/Update all Enrolled rows that refer to the deleted sid in Students (CASCADE). Both are affected Option 2: Reject the deletion/updating of the Students row if an Enrolled row refers to it (NO ACTION ). [The default action for SQL]. None is affected. Option 3: Set the sid of Enr ...
... Option 1: Delete/Update all Enrolled rows that refer to the deleted sid in Students (CASCADE). Both are affected Option 2: Reject the deletion/updating of the Students row if an Enrolled row refers to it (NO ACTION ). [The default action for SQL]. None is affected. Option 3: Set the sid of Enr ...