Transaction manager
... (a) If two transactions only read a data item, they do not conflict and order is not important. (b) If two transactions either read or write completely separate data items, they do not conflict and order is not important. (c) If one transaction writes a data item and another reads or writes same dat ...
... (a) If two transactions only read a data item, they do not conflict and order is not important. (b) If two transactions either read or write completely separate data items, they do not conflict and order is not important. (c) If one transaction writes a data item and another reads or writes same dat ...
Transaction Management
... COMMIT statement – ends the SQL trans.; effects permanently recorded within DB ROLLBACK statement – DB is rolled back to its previous consistent state and all the changes ...
... COMMIT statement – ends the SQL trans.; effects permanently recorded within DB ROLLBACK statement – DB is rolled back to its previous consistent state and all the changes ...
Replicating Oracle Databases with Quest SharePlex Compared to
... The executable then asks for the location of the primary directory where the SharePlex binaries will reside and for the directory where the variable data (configuration files, license files, queue files, etc.) will reside. ESG Lab chose /u01/dell/splex8.6.5 as the base directory, and put the binarie ...
... The executable then asks for the location of the primary directory where the SharePlex binaries will reside and for the directory where the variable data (configuration files, license files, queue files, etc.) will reside. ESG Lab chose /u01/dell/splex8.6.5 as the base directory, and put the binarie ...
Schema Objects
... • Composite index value is null if all columns are null: CREATE TABLE test (id1 NUMBER, id2 NUMBER, UNIQUE(id1, id2)); INSERT INTO test VALUES (1, 1); INSERT INTO test VALUES (1, 1); -- error INSERT INTO test VALUES (1, NULL); INSERT INTO test VALUES (1, NULL); -- error INSERT INTO test VALUES (NULL ...
... • Composite index value is null if all columns are null: CREATE TABLE test (id1 NUMBER, id2 NUMBER, UNIQUE(id1, id2)); INSERT INTO test VALUES (1, 1); INSERT INTO test VALUES (1, 1); -- error INSERT INTO test VALUES (1, NULL); INSERT INTO test VALUES (1, NULL); -- error INSERT INTO test VALUES (NULL ...
CS352 Lecture - Commercial Query Languages: SQL, QBE last
... (3) It is also possible for any system that has the db2 JDBC driver installed to access the database via JDBC - for example, this is the case with my laptop. The JDBC driver is written in Java, and hence runs on any system that runs Java - it does not have to be running db2. For a JDBC connection, ...
... (3) It is also possible for any system that has the db2 JDBC driver installed to access the database via JDBC - for example, this is the case with my laptop. The JDBC driver is written in Java, and hence runs on any system that runs Java - it does not have to be running db2. For a JDBC connection, ...
Probabilistic Databases: Diamonds in the Dirt (Extended Version)
... and aggregate large volumes of imprecise data to find the “diamonds in the dirt”. This wide-variety of applications points to the need for generic tools to manage imprecise data. In this paper, we survey the state of the art techniques to handle imprecise data which models imprecision as probabilist ...
... and aggregate large volumes of imprecise data to find the “diamonds in the dirt”. This wide-variety of applications points to the need for generic tools to manage imprecise data. In this paper, we survey the state of the art techniques to handle imprecise data which models imprecision as probabilist ...
CHAPTER 2
... to tackle the problems of heterogeneity among databases. A survey of, and comparison between, systems developed to handle this problem can be found in [1,2]. This chapter will focus on three commonly used and well-supported approaches: the physical approach, the global approach, and the multidatabas ...
... to tackle the problems of heterogeneity among databases. A survey of, and comparison between, systems developed to handle this problem can be found in [1,2]. This chapter will focus on three commonly used and well-supported approaches: the physical approach, the global approach, and the multidatabas ...
Accelerate Your Response to the EU GDPR Using
... detection systems, and proper networking, hoping that attackers would not be able to reach the databases directly. However, as the traditional network perimeters are becoming blurry, and the number of people (administrators, test and development, and partners) who have direct access to the databases ...
... detection systems, and proper networking, hoping that attackers would not be able to reach the databases directly. However, as the traditional network perimeters are becoming blurry, and the number of people (administrators, test and development, and partners) who have direct access to the databases ...
Unit 3- Database Connectivity A database is an organized collection
... The type of a ResultSet object determines the level of its functionality in two areas: the ways in which the cursor can be manipulated, and how concurrent changes made to the underlying data source are reflected by the ResultSet object. The sensitivity of a ResultSet object is determined by one of t ...
... The type of a ResultSet object determines the level of its functionality in two areas: the ways in which the cursor can be manipulated, and how concurrent changes made to the underlying data source are reflected by the ResultSet object. The sensitivity of a ResultSet object is determined by one of t ...
ONLINE-EXTRA CONTENT Optimizing Disaster Recovery Using
... Data Guard on Linux®-based Dell™ servers and Dell storage as a powerful but lowcost, high-availability and disaster recovery solution. The following procedures describe the steps to produce an Oracle Maximum Availability Architecture (MAA) configuration consisting of a primary site in Austin, Texas, ...
... Data Guard on Linux®-based Dell™ servers and Dell storage as a powerful but lowcost, high-availability and disaster recovery solution. The following procedures describe the steps to produce an Oracle Maximum Availability Architecture (MAA) configuration consisting of a primary site in Austin, Texas, ...
Query-by-Example (QBE)
... E.g. list in ascending alphabetical order all customers who have an ...
... E.g. list in ascending alphabetical order all customers who have an ...
Chapter 5
... that allow you to manipulate/access related data – Cannot be viewed or modified outside the database – Generally associated with physical structure(s) – E.g. (Figure 5-3): tablespaces, segments, schema objects, extents, database blocks Oracle 10g Database Administrator: Implementation and Administra ...
... that allow you to manipulate/access related data – Cannot be viewed or modified outside the database – Generally associated with physical structure(s) – E.g. (Figure 5-3): tablespaces, segments, schema objects, extents, database blocks Oracle 10g Database Administrator: Implementation and Administra ...
LabVIEW™ DATABASE INTERFACING FOR ROBOTIC CONTROL
... user needs to quickly access and store any and all of this dynamically changing information. For example, there is a need to continuously store and update the calibration data of the robot, populate the setting of each axis and positioning inside the workplace, and also store robot positioning infor ...
... user needs to quickly access and store any and all of this dynamically changing information. For example, there is a need to continuously store and update the calibration data of the robot, populate the setting of each axis and positioning inside the workplace, and also store robot positioning infor ...
Chapter 13 - Emunix Documentation on the Web
... – Referential integrity rules and actions – The equivalent of triggers ...
... – Referential integrity rules and actions – The equivalent of triggers ...
Encoding the Password - A low maintenance way to secure your data access
... The Application Login ID and password eliminate the maintenance of individual user login accounts on the database. The PROC PWENCODE procedure enables the password to be encoded and saved in a secure location. By combining the two steps we reduce the maintenance workload and steer clear the password ...
... The Application Login ID and password eliminate the maintenance of individual user login accounts on the database. The PROC PWENCODE procedure enables the password to be encoded and saved in a secure location. By combining the two steps we reduce the maintenance workload and steer clear the password ...
Oracle NoSQL Database, 12.1.4.0.9 Enterprise Edition
... operations in the event of zone failures. This allows for any planned maintenance that results in the taking of one or more zones offline without impacting business operations. ...
... operations in the event of zone failures. This allows for any planned maintenance that results in the taking of one or more zones offline without impacting business operations. ...
Database - bYTEBoss
... – The database is then in the same consistent state as it was at the point when the transaction log was backed up for the very last time – When you recover a database using a Full Database Backup, SQL Server 2005 first reconstructs all database files in the correct locations and then the system reco ...
... – The database is then in the same consistent state as it was at the point when the transaction log was backed up for the very last time – When you recover a database using a Full Database Backup, SQL Server 2005 first reconstructs all database files in the correct locations and then the system reco ...
Thesis Paper
... constraints. With a non-relational database, one “collection” (the non-relational version of a table) would store all of the posts. Each comment associated with a post would be stored as part of that post’s record within the collection. This means that one record (or “document”, in non-relational te ...
... constraints. With a non-relational database, one “collection” (the non-relational version of a table) would store all of the posts. Each comment associated with a post would be stored as part of that post’s record within the collection. This means that one record (or “document”, in non-relational te ...
distributed databases and client-server
... autonomous centralized DBMS that has its own local users, local transaction, and DBA and hence has a very high degree of local autonomy. Used when there is some global view of databases shared by applications. ...
... autonomous centralized DBMS that has its own local users, local transaction, and DBA and hence has a very high degree of local autonomy. Used when there is some global view of databases shared by applications. ...
Chapter 7 (Part 1)
... likely be many-to-many because each teacher may instruct more than one course and each course may have more than one instructor. Example 2 : Orders table and a Products table: an order can contain many products, and a product can be on many orders. Slide 25 of 36 ...
... likely be many-to-many because each teacher may instruct more than one course and each course may have more than one instructor. Example 2 : Orders table and a Products table: an order can contain many products, and a product can be on many orders. Slide 25 of 36 ...
A Universal NoSQL Engine, Using a Tried and Tested Technology
... Without exception, the most successful and well-known of the NoSQL databases have been developed from scratch, all within just the last few years. Strangely, it seems that nobody looked around to see whether there were any existing, successfullyimplemented database technologies that could have provi ...
... Without exception, the most successful and well-known of the NoSQL databases have been developed from scratch, all within just the last few years. Strangely, it seems that nobody looked around to see whether there were any existing, successfullyimplemented database technologies that could have provi ...