The Low-Cal Database Environment
... – Better multi-instance management – Scale the number of instances without scaling the management difficulty ...
... – Better multi-instance management – Scale the number of instances without scaling the management difficulty ...
www.olifantconsultancy.nl [email protected] Vacature
... by application developers – forming a key bridge between Development and IS Operations in this respect. • Maintaining database security. • Ensuring compliance with database vendor license agreement. • Controlling and monitoring user access to the database. • Monitoring and optimizing the performance ...
... by application developers – forming a key bridge between Development and IS Operations in this respect. • Maintaining database security. • Ensuring compliance with database vendor license agreement. • Controlling and monitoring user access to the database. • Monitoring and optimizing the performance ...
Distributed database - GCG-42
... User/application does not need to know where data resides User/application does not need to know about duplication ...
... User/application does not need to know where data resides User/application does not need to know about duplication ...
Transactions and Locks
... starts up. – SQL server applies every committed transaction in log since last checkpoint to database file(s). – Any changes to log that are not committed are rolled back – See figure 14-2 ...
... starts up. – SQL server applies every committed transaction in log since last checkpoint to database file(s). – Any changes to log that are not committed are rolled back – See figure 14-2 ...
iOS/SQLite (Powerpoint)
... • Flying Meat Database (FMDB) – FMDB is a set of Objective C wrappers for SQLite – let you program using embedded SQL – modeled after Java JDBC ...
... • Flying Meat Database (FMDB) – FMDB is a set of Objective C wrappers for SQLite – let you program using embedded SQL – modeled after Java JDBC ...
Chapter 7: Relational Database Design
... obtained by a topological sorting of the graph. This is a linear order consistent with the partial order of the graph. For example, a serializability order for Schedule A would be T5 T1 T3 T2 T4 . ...
... obtained by a topological sorting of the graph. This is a linear order consistent with the partial order of the graph. For example, a serializability order for Schedule A would be T5 T1 T3 T2 T4 . ...
Document
... has completed (i.e., the transfer of the $50 has taken place), the updates to the database by the transaction must persist even if there are software or hardware failures. ...
... has completed (i.e., the transfer of the $50 has taken place), the updates to the database by the transaction must persist even if there are software or hardware failures. ...
Singleton Pattern
... static Database* DB instance attributes… static Database* getDB() instance methods… ...
... static Database* DB instance attributes… static Database* getDB() instance methods… ...
Document
... context of databases, a single logical operation on the data is called a transaction. For example, a transfer of ...
... context of databases, a single logical operation on the data is called a transaction. For example, a transfer of ...
Database System Concepts, 6 th Ed
... Such a situation is called a deadlock. To handle a deadlock one of T3 or T4 must be rolled back and its locks released. ...
... Such a situation is called a deadlock. To handle a deadlock one of T3 or T4 must be rolled back and its locks released. ...
Read(B) - Fakultas Ilmu Komputer Universitas Indonesia
... User A places an exclusive lock on item 1001 User B places an exclusive lock on item 2002 User A attempts to place an exclusive lock on item 2002 User A placed into a wait state User B attempts to place an exclusive lock on item 1001 User B placed into a wait state This is called a deadlock. One tra ...
... User A places an exclusive lock on item 1001 User B places an exclusive lock on item 2002 User A attempts to place an exclusive lock on item 2002 User A placed into a wait state User B attempts to place an exclusive lock on item 1001 User B placed into a wait state This is called a deadlock. One tra ...
Induction slides
... Translate EER diagrams → SQL CREATE statements; SQL → relational algebra Analyse a relational database design using functional dependencies & perform transforms towards Boyce-Codd Normal Form ...
... Translate EER diagrams → SQL CREATE statements; SQL → relational algebra Analyse a relational database design using functional dependencies & perform transforms towards Boyce-Codd Normal Form ...
Rainhill HigH SCHOOL media arts college Year 9 Information
... INFORMATION TECHNOLOGY HALF-TERM 3 This half term I will learn: The basic theory, creation and use of a single-table database and a simple relational database involving two tables in a one-to-many relationship. You will focus on understanding: ...
... INFORMATION TECHNOLOGY HALF-TERM 3 This half term I will learn: The basic theory, creation and use of a single-table database and a simple relational database involving two tables in a one-to-many relationship. You will focus on understanding: ...
B - Homework Market
... • Increased throughput: can do different things simultaneously, so can do more things. • Interleaved processing: concurrent execution of processes interleaved in single CPU. Why? • When one process is doing I/O, the other can be accessing the database: better throughput. • Prevents one process from ...
... • Increased throughput: can do different things simultaneously, so can do more things. • Interleaved processing: concurrent execution of processes interleaved in single CPU. Why? • When one process is doing I/O, the other can be accessing the database: better throughput. • Prevents one process from ...
Maintaining Global Integrity in Federated Relational Databases
... Referential Integrity Constraints: Employee in B can only be inserted, if it also exists in A Aggregated Constraints: Sum of salary of all employees less than certain value ...
... Referential Integrity Constraints: Employee in B can only be inserted, if it also exists in A Aggregated Constraints: Sum of salary of all employees less than certain value ...
Lecture 10 - cda college
... • Transaction log keeps track of all transactions 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 ty ...
... • Transaction log keeps track of all transactions 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 ty ...
Topics in Database Administration
... Checkpoint: A DBMS software utility that periodically suspends all transaction processing and synchronizes files within the database. – Some databases, such as Oracle, do not actually halt processing. They simply write checkpoint information to files. – The purpose of a checkpoint is to minimize the ...
... Checkpoint: A DBMS software utility that periodically suspends all transaction processing and synchronizes files within the database. – Some databases, such as Oracle, do not actually halt processing. They simply write checkpoint information to files. – The purpose of a checkpoint is to minimize the ...
Course: Database Management Systems Credits: 3
... allowing it to persist over long periods of time safely. ...
... allowing it to persist over long periods of time safely. ...
02010_PPT_ch10
... • Lock guarantees unique access to a data item by transaction • Two types of locks: binary locks and shared/exclusive locks Database Systems, 8th Edition ...
... • Lock guarantees unique access to a data item by transaction • Two types of locks: binary locks and shared/exclusive locks Database Systems, 8th Edition ...
Recovery
... Recovery Technique for multidatabase transactions Two-phase commit, phase II 1. If all participants voted OK, then a commit is sent 2. If any participant votes NOT OK, then an abort is sent ...
... Recovery Technique for multidatabase transactions Two-phase commit, phase II 1. If all participants voted OK, then a commit is sent 2. If any participant votes NOT OK, then an abort is sent ...
1-Day | OnBase Database Health Check
... database server setup. All points to be reviewed are based on Hyland Software’s recommendations as well as the combine years of experience assisting customers with optimizing their database server setup for ...
... database server setup. All points to be reviewed are based on Hyland Software’s recommendations as well as the combine years of experience assisting customers with optimizing their database server setup for ...
Chapter 7: Relational Database Design
... avoid this, follow a modified protocol called strict two-phase locking. Here a transaction must hold all its exclusive locks till it commits/aborts. Rigorous two-phase locking is even stricter: here all locks are ...
... avoid this, follow a modified protocol called strict two-phase locking. Here a transaction must hold all its exclusive locks till it commits/aborts. Rigorous two-phase locking is even stricter: here all locks are ...
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Welcome [mll.csie.ntu.edu.tw]
... • Suppose that you want to build an university database. It must store the following information: – Entities: Students, Professors, Classes, Classrooms – Relationships: Who teaches what? Who teaches where? Who teaches whom? ...
... • Suppose that you want to build an university database. It must store the following information: – Entities: Students, Professors, Classes, Classrooms – Relationships: Who teaches what? Who teaches where? Who teaches whom? ...