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谁用过Absolute Database控件?
wpg
2004-09-01 12:58:27
性能和速度怎么样?
记录数较多时,文件会不会变的很大?
文件是否容易损坏?
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谁用过Absolute Database控件?
性能和速度怎么样? 记录数较多时,文件会不会变的很大? 文件是否容易损坏?
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rcaicc
2004-09-01
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没用过...
Absolute
Database
for D7
这个数据库看性能不错,哪位能破解一下。Overview
Absolute
Database
: Delphi
database
with SQL support.
Absolute
Database
lets you forget the Borland
Database
Engine (BDE). This BDE replacement is the compact, high-speed, robust and easy-to-use
database
engine. With
Absolute
Database
you will not need special installation and configuration, it compiles right into your EXE. Make your application faster and smaller with
Absolute
Database
BDE alternative!An individual may use
Absolute
Database
Personal in a project if he / she is the only user of this project. If your project is public or if you represent a company, you must order commercial edition of
Absolute
Database
.Key Features: No BDE; no DLLs Single-file
database
SQL‘92 (DDL & DML) support Single-user and multi-user mode (file-server) Unmatched ease-of-use 100% compatibility with standard DB-aware controls Strong encryption BLOB compression Free for personal use Full source code available Royalty-free Specification Ease of Deployment No BDE, no DLLs No special installation or configuration required
Database
engine compiles right into EXE Single-file
database
format
Database
file could be merged with the application EXE file High Speed Advanced cache management and buffering architecture Sophisticated SQL query and filter optimizer Special optimized
database
engine for temporary results of SQL queries Fast B*-Tree indexes with high-speed on thousands and on millions of records Buffered transactions for batch inserts, updates and deletes In-memory tables for fast operations with data loaded into memory Optimization for read-only
database
s, such as
database
s on CD High-concurrency design for multi-threaded applications Multi-User Zero-admin file-server Automatic record and table locking Automatic detection of changes made by other users Configurable limit of concurrent connections Easy switching between single-user and multi-user mode Full transactions support with ReadCommited isolation level SQL Support SELECT with DISTINCT, INNER LEFT, RIGTH, FULL and OUTER JOIN, GROUP BY and ORDER BY clauses CREATE TABLE, DROP TABLE, ALTER TABLE statements CREATE INDEX, DROP INDEX statements INSERT, UPDATE, DELETE statements BETWEEN, IN, LIKE, IS NULL, EXISTS operators Aggregate functions COUNT,SUM,MIN,MAX,AVG Most of all SQL‘92 arithmetic, logical, date-time and string functions and operators Data types conversion by function CAST SQL scripts (multiple commands separated by ‘;‘) Parameters in queries SELECT from several
database
s in one query Correlated and non-correlated subqueries Compactness Small size of code added into the application by the
database
engine units Small
database
file size achieved by customizable page size, compression of table metadata and other special means Automatic free space recycling for data records, index pages, and BLOB blocks Fast BLOB data compression Short indexes for string fields Low memory consumption Compatibility Support of most of TTable field data types, including BLOB fields Full compatibility with standard DB-aware visual controls such as QuickReport, DBGrid, DBNavigator, DBImage, DBMemo, DBRichEdit and others Calculated and lookup fields Most of TTable functions including Key and Range methods Support for the IProvider interface (TClientDataSet) Functionality Unicode support in String and Memo fields Multiple-fields indexes with descending, ascending, case-sensitive and insensitive options Shareable tables Default values support Min, max and not null constraints on field values Export to SQL script (reverse engineering) Security Strong encryption of
database
file Variety of supported encryption algorithms: Rijndael, the Advanced Encryption Standard (AES) winner 128 bit key, Rijndael 256 bit key, Blowfish 448 bit key, Twofish 128 bit key, Twofish 256 bit key, Square, Single DES and Triple DES Reliability Repair
database
in case of hardware failure or operating system error caused by another application Auto-detect of
database
corruption and automatic repair of
database
file Convenience Table restructuring being performed in the easiest way keeping all the existing data Data importing from and exporting to any dataset Internationalization / localization support by use of current system locale Displaying progress during potentially slow operations with the tables and
database
s Utilities DBImportExport utility to transfer your existing tables from
database
systems with BDE driver, such as Paradox, Interbase, Access, Oracle, SQL Server to
Absolute
Database
format and vice versa.
Absolute
Database
Manager to manage a
database
easily and to perform all supported operations with tables and
database
file
Absolute
Database
Manager also provides you an easy way of executing SQL queries All utilities come with full source code and can be used as an advanced examples Ease of Development Full compatibility with TTable, TQuery, TSession and T
Database
components Extensive documentation: Developer‘s Guide and Reference covering every development issue. Large number of demos illustrating wide range of use cases Prompt and responsive technical support Cost-Effectiveness 100% royalty-free, i.e. there is no additional licensing fees no matter how many times you deploy the application Flexible licensing: source code and no source code versions, multi-developers licenses Comparison with other
Database
s You can see here Comparision with other
database
s Maximum Capacity SpecificationsObject Maximum sizes / numbers Multi-User Edition Single-User Edition Bytes per string field 64,000 (also limited by page size) 64,000 (also limited by page size) Bytes per BLOB field 2GB 2GB Bytes per index 64,000 (also limited by page size) 64,000 (also limited by page size) Bytes per row 65,400 (also limited by page size) 65,400 (also limited by page size) Columns per index 10,000 10,000 Columns per table 65,000 65,000 UNIQUE indexes or constraints per table 30,000 30,000
Database
size 32 TB (also limited by file system and OS) 32 TB (also limited by file system and OS) Identifier length (in characters) 255 255 Locks per connection 2,147,483,647 N/A Rows per table 2,147,483,647 2,147,483,647 Tables per
database
2,147,483,647 2,147,483,647 Bytes per page 65,536 65,536 Pages per
database
file 2,147,483,647 2,147,483,647 Connections per
database
Maximum value of configured connections before creating
database
file (up to 2,147,483,647) 1 Records in transaction 2,147,483,647 (also limited by available RAM) 2,147,483,647 (also limited by available RAM) In-memory table size 2,147,483,647 (also limited by available RAM) 2,147,483,647 (also limited by available RAM) Requirements Target Development Environment:Delphi 4, Delphi 5, Delphi 6, Delphi 7 and C++ Builder 4, C++ Builder 5, C++ Builder 6. Trial and Personal editions of Delphi are not supported.Target OS:Windows 95/98/ME, Windows NT, 2000, XP
Absolute
Database
v 4.88 CS 中文查询修改
该补丁使得SQL: Selete * from xxx where a like "中文%"中文查询能够工作了同样单字符也能匹配中文了:"_",应该也能在Filter中用
全面理解和掌握CSS定位
关于 CSS 中的定位(position),你可能听说过绝对定位(
absolute
)和相对定位(relative),但其实还有另外三个定位。 本次课程将通过20分钟的时间来介绍有关 CSS 定位的所有知识,当视频结束的时候,你将会...
Absolute
Database
v 4.88 CS Full Source 修改版
修改加上了sql查询的中文支持。
Absolute
.
Database
.v4.84.Full.Source.For.Delphi.BCB_
Absolute
Data
大名鼎鼎的
Absolute
Database
数据库
控件
,有了它,在delphi下编程可以摆脱BDE了。 支持D4,D5,D6,D7,D9,BCB4,BCB5,BCB6
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