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ازهلها | Ezhalha

ازهلها | Ezhalha

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🎓 ازهلها | Ezhalha مساحة تساعدك في رحلتك الجامعية من الفكرة إلى الإنجاز. 💡 مشاريع تخرج • برمجة • أبحاث • عروض تقديمية • تقارير • سيرة ذاتية • تدريب وشروحات محتوى مفيد، أدوات ومصادر، ونصائح تساعدك تتعلم وتنجز بشكل أفضل. 🚀 ازهلها.. وخلك مركز على هدفك

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A sectors is divided into smaller blocks or track
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A sectors is divided into smaller blocks or
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Track capacities vary typically from 4 to 50 bytes or more
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Disks are divided into concentric circular tracks on each disk surface.
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Data stored contains several magnetic disks connected to a rotating spindle.
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Data stored as magnetized areas on magnetic disk surfaces
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Preferred secondary storage device for low storage capacity and high cost.
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ركزوا R قيمتها محسوبه ب كليوا بايت

If record size R=2 kbytes block size B=4096 bytes r=12288 records, The number of file blocks is
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the program checks the subsequent positions in order until an unused (empty) position is found,
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uses mirrored disks
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Collisions occur when a new record hashes to a bucket that is already fuill
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Reading or writing a disk block is time consuming because of the seek time
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In a B+tree, all pointers to data records exists at the leaf-level nodes
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primary index is dense index
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A dense index has index entries for only some of the search values
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Linear hashing does require an overflow area but does not use a directory
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In linear hashing the directory is a binary tree
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In ordered Files Record Insertion is quite efficient
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