Document
... 4. Fields in SQL ORDER BY and GROUP BY commands 5. When there are >100 values but not when there are <30 values ...
... 4. Fields in SQL ORDER BY and GROUP BY commands 5. When there are >100 values but not when there are <30 values ...
Engineering High-Performance Database Engines
... desirable. Therefore, a system has to ensure that they do not hinder each other. For example, a long-running OLAP query must not interfere with concurrent OLTP transactions. 2. Main memory is so large that the working set of transaction processing fits into main memory. Therefore, transactions never ...
... desirable. Therefore, a system has to ensure that they do not hinder each other. For example, a long-running OLAP query must not interfere with concurrent OLTP transactions. 2. Main memory is so large that the working set of transaction processing fits into main memory. Therefore, transactions never ...
1-Witch of the following statements about shared servers are true
... 32✓ B. It is not possible to change the segment space management method after creation. A and C are wrong because a tablespace can be converted to local extent management or renamed at any time. D is wrong because a datafile can be resized downward, though only if the space to be freed up has no ...
... 32✓ B. It is not possible to change the segment space management method after creation. A and C are wrong because a tablespace can be converted to local extent management or renamed at any time. D is wrong because a datafile can be resized downward, though only if the space to be freed up has no ...
Default Temporary Tablespace
... System Global Area (SGA): Allocated at instance startup, and is a fundamental component of an Oracle Instance Program Global Area (PGA): Allocated when the server process is started ...
... System Global Area (SGA): Allocated at instance startup, and is a fundamental component of an Oracle Instance Program Global Area (PGA): Allocated when the server process is started ...
NoSQL DATABASE - COW :: Ceng - Middle East Technical University
... Web apps have different needs(than the apps that RDBMS were designed for) --Low and predictable response time(latency) --Scalability & elasticity(at low cost) --High availability --Flexible schemas/ semi-structured data --Geographic distribution (multiple datacenters) ...
... Web apps have different needs(than the apps that RDBMS were designed for) --Low and predictable response time(latency) --Scalability & elasticity(at low cost) --High availability --Flexible schemas/ semi-structured data --Geographic distribution (multiple datacenters) ...
Inventory Control in Stores Dec05-09
... Software will be windows compatible Proof of concept One reader has to perform all tasks System will not be completely stand alone System will require some human interaction ...
... Software will be windows compatible Proof of concept One reader has to perform all tasks System will not be completely stand alone System will require some human interaction ...
notes #15
... • DAC determines whether a user can read or write an object based on rules that involve the security level of the object and the clearance of the user. These rules ensure that sensitive data can never be ‘passed on’ to another user without the necessary clearance. • The SQL standard does not include ...
... • DAC determines whether a user can read or write an object based on rules that involve the security level of the object and the clearance of the user. These rules ensure that sensitive data can never be ‘passed on’ to another user without the necessary clearance. • The SQL standard does not include ...
Relationship Types - School of Computing
... Snapshot - Database state at a particular point in time Initially empty Database is populated or loaded DBMS ensures every state is a valid state Schema evolution vs. data update ...
... Snapshot - Database state at a particular point in time Initially empty Database is populated or loaded DBMS ensures every state is a valid state Schema evolution vs. data update ...
What is a Transaction?
... • May be based on time running, time left, amount of data used, how many transactions are involved in rollback (cascades) ...
... • May be based on time running, time left, amount of data used, how many transactions are involved in rollback (cascades) ...
IST 274 -10 Database Administrator
... – Closes the database, dismounts the database, and shuts down the instance – Before an open database can be placed in the NOMOUNT or MOUNT state it must first be shut down – Oracle databases can be suspended and resumed • ALTER SYSTEM SUSPEND | RESUME; ...
... – Closes the database, dismounts the database, and shuts down the instance – Before an open database can be placed in the NOMOUNT or MOUNT state it must first be shut down – Oracle databases can be suspended and resumed • ALTER SYSTEM SUSPEND | RESUME; ...
ClearPass_SQL_Lookup_Tech_Note
... ClearPass SQL Lookup Tech Note The purpose of this tech note is to show how to configure ClearPass to query an external database. For the purpose of this example, the internal database will be used. This will allow you to try it out without having to setup a new database server. In this example we a ...
... ClearPass SQL Lookup Tech Note The purpose of this tech note is to show how to configure ClearPass to query an external database. For the purpose of this example, the internal database will be used. This will allow you to try it out without having to setup a new database server. In this example we a ...
Database Management Systems (DBMS)
... Persistence –data in a database exist permanently in the sense the data can live beyond the scope of the process that created Validity/Integrity/ Correctness –data should be correct with respect to the real world entity that they represent Security –data should be protected from unauthorised access ...
... Persistence –data in a database exist permanently in the sense the data can live beyond the scope of the process that created Validity/Integrity/ Correctness –data should be correct with respect to the real world entity that they represent Security –data should be protected from unauthorised access ...
Understanding Computers, Chapter 14
... • Current information about each table, such as the current number of records – Ensures that data being entered into the database does not violate any specified criteria ...
... • Current information about each table, such as the current number of records – Ensures that data being entered into the database does not violate any specified criteria ...
Understanding Computers, Chapter 14
... • Current information about each table, such as the current number of records – Ensures that data being entered into the database does not violate any specified criteria ...
... • Current information about each table, such as the current number of records – Ensures that data being entered into the database does not violate any specified criteria ...
Why not use Federated approach for Database Management
... “…organizations merge or takeover since the existing systems have been designed for different corporate needs, the resulting enterprise will have to face information inconsistency, heterogeneity and incompatible overlap”. Wijegunartne, Fernandez and Vltoudis in [1] “…a large modern enterprise, it ...
... “…organizations merge or takeover since the existing systems have been designed for different corporate needs, the resulting enterprise will have to face information inconsistency, heterogeneity and incompatible overlap”. Wijegunartne, Fernandez and Vltoudis in [1] “…a large modern enterprise, it ...
Chapter 9 Review Questions and Answers
... A database is an organized collection of related data. b) How does an RDBMS store data? An RDBMS stores related data in tables. 2. What is one benefit of dividing data into tables? Dividing data into tables eliminates unnecessary data duplication, or data redundancy. 3. a) What is a database schema? ...
... A database is an organized collection of related data. b) How does an RDBMS store data? An RDBMS stores related data in tables. 2. What is one benefit of dividing data into tables? Dividing data into tables eliminates unnecessary data duplication, or data redundancy. 3. a) What is a database schema? ...
Who Dares Wins – SQL Server Consolidation in the Cloud
... Elastic databases in elastic database pools Pooled resources leveraged by many databases Standard elastic pool provides 200-1200* DTUs for up to 100* databases Elastic Standard databases can burst up to 100 DTUs (S3 level) Created/configure pool via portal, PowerShell, REST APIs Move databases in/ou ...
... Elastic databases in elastic database pools Pooled resources leveraged by many databases Standard elastic pool provides 200-1200* DTUs for up to 100* databases Elastic Standard databases can burst up to 100 DTUs (S3 level) Created/configure pool via portal, PowerShell, REST APIs Move databases in/ou ...
MySQL Fundamentals - Kirkwood Web Certificate Server
... • MySQL uses Structured Query Language (SQL) • SQL is language for retrieving, updating, deleting, information from a database • Relational databases use a model that define data according to relationships • Other databases: Oracle, Informix, DB2 (IBM) Access (Microsoft), SQL Server, PostgreSQL ...
... • MySQL uses Structured Query Language (SQL) • SQL is language for retrieving, updating, deleting, information from a database • Relational databases use a model that define data according to relationships • Other databases: Oracle, Informix, DB2 (IBM) Access (Microsoft), SQL Server, PostgreSQL ...
BUSINESS DRIVEN TECHNOLOGY, 2e
... • Example: A person’s age – If the database has a stored attribute such as the person’s Date of Birth, you can create a derived attribute called Age from taking the Current Date and subtracting the Date of Birth to get the age ...
... • Example: A person’s age – If the database has a stored attribute such as the person’s Date of Birth, you can create a derived attribute called Age from taking the Current Date and subtracting the Date of Birth to get the age ...
Avoiding Database Anomalies
... Identify suitable Attributes for each Relation; as a minimum those that will act as the Primary & Foreign Keys. Document as a Database Schema; starting with the Relations first, then coming back to document suitable ...
... Identify suitable Attributes for each Relation; as a minimum those that will act as the Primary & Foreign Keys. Document as a Database Schema; starting with the Relations first, then coming back to document suitable ...
BUS 206 Access Assignment
... Query 3: A query called “Total Dresses Rented” that counts the number of dresses rented by each customer. The query should include columns for Last Name, First Name, Email Address, and Number of Dresses Rented. Sort the output so that the customer who rents the most dresses appears at the top of the ...
... Query 3: A query called “Total Dresses Rented” that counts the number of dresses rented by each customer. The query should include columns for Last Name, First Name, Email Address, and Number of Dresses Rented. Sort the output so that the customer who rents the most dresses appears at the top of the ...
doc
... The actual database is to contain several million competitors and nearly one hundred thousand events. The database must be indexed for producing fast results for two particular queries: (i) A list of the names and nationalities of the competitors for a given event where the event description is give ...
... The actual database is to contain several million competitors and nearly one hundred thousand events. The database must be indexed for producing fast results for two particular queries: (i) A list of the names and nationalities of the competitors for a given event where the event description is give ...
About the Presentations
... Database Components - Field • A group of related characters • Represents an attribute or characteristic of an entity • Corresponds to a column in the physical database ...
... Database Components - Field • A group of related characters • Represents an attribute or characteristic of an entity • Corresponds to a column in the physical database ...
About the Presentations
... Database Components - Field • A group of related characters • Represents an attribute or characteristic of an entity • Corresponds to a column in the physical database ...
... Database Components - Field • A group of related characters • Represents an attribute or characteristic of an entity • Corresponds to a column in the physical database ...
Microsoft Jet Database Engine
The Microsoft Jet Database Engine is a database engine on which several Microsoft products have been built. A database engine is the underlying component of a database, a collection of information stored on a computer in a systematic way. The first version of Jet was developed in 1992, consisting of three modules which could be used to manipulate a database.Database connect for MicrosoftJET stands for Joint Engine Technology, sometimes being referred to as Microsoft JET Engine or simply Jet. Microsoft Access and Visual Basic use or have used Jet as their underlying database engine. It has since been superseded for general use, however, first by Microsoft Desktop Engine (MSDE), then later by SQL Server Express. For larger database needs, Jet databases can be upgraded (or, in Microsoft parlance, ""up-sized"") to Microsoft's flagship database product, SQL Server.However, this does not mean that a MS Jet (Red) database cannot match MS SQL Server in storage capacity. A 5 billion record MS Jet (Red) database with compression and encryption turned on requires about 1 terabyte of disk storage space, comprising hundreds of (*.mdb) files, each acting as partial table, and not as a database in itself.Over the years, Jet has become almost synonymous with Microsoft Access, to the extent that many people refer to a Jet database as an ""Access database"".